A headset

Abstract

An embodiment of the present specification provides an earphone, comprising: a sound-emitting portion, including a transducer and a shell for accommodating the transducer; an ear hook, the ear hook comprising a first part and a second part; in a worn state, the first part is hung between the user's auricle and the head, and the second part extends toward the side of the auricle away from the head and connects to the sound-emitting portion, so that the sound-emitting portion is worn near the ear canal but does not block the ear canal opening; wherein the ear hook and the sound-emitting portion form a first projection on the user's sagittal plane, and in a non-worn state, the first projection and the tangent segment jointly define a first closed curve, and the first area range of the first closed curve is 300mm 2 ‑500mm 2 Between; the part of the inner contour corresponding to the ear hook includes a first curve, the first curve has an extreme point in a first direction, and the first direction is perpendicular to the long axis direction of the projection of the sound-emitting part; the extreme point is located on the posterior side of the projection point of the upper vertex of the ear hook on the sagittal plane, and the upper vertex of the ear hook is the highest point of the inner wall of the ear hook along the vertical axis of the user in the wearing state.

Description

[0001] Cross-references

[0002] This application claims priority to Chinese application No. 202211336918.4 filed on October 28, 2022, priority to Chinese application No. 202223239628.6 filed on December 1, 2022, priority to international application No. PCT / CN2022 / 144339 filed on December 30, 2022, priority to international application No. PCT / CN2023 / 079401 filed on March 2, 2023, and priority to international application No. PCT / CN2023 / 083534 filed on March 24, 2023, all of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of acoustic technology, and in particular to a headset. Background Art

[0004] With the development of acoustic output technology, acoustic devices (such as headphones) have been widely used in people's daily lives. They can be used in conjunction with electronic devices such as mobile phones and computers to provide users with an auditory feast. Headphones are a portable audio output device that achieves sound conduction within a specific range. Compared with traditional in-ear and over-ear headphones, headphones have the characteristics of not blocking or covering the ear canal, allowing users to obtain sound information from the external environment while listening to music, thereby improving safety and comfort. The output performance of headphones has a great impact on the user's comfort.

[0005] Therefore, it is necessary to provide an earphone to improve the output performance of the earphone. Summary of the Invention

[0006] An embodiment of the present application provides an earphone, which includes: a sound-emitting part, including a transducer and a shell for accommodating the transducer; an ear hook, the ear hook including a first part and a second part; in a worn state, the first part is hung between the user's auricle and the head, and the second part extends to the side of the auricle away from the head and connects to the sound-emitting part, so that the sound-emitting part is worn near the ear canal but does not block the ear canal opening; wherein, the ear hook and the sound-emitting part form a first projection on the user's sagittal plane, the first projection includes an outer contour, a first end contour, an inner contour and a second end contour, and in a non-worn state, the inner contour, the first end contour, the second end contour and the tangent segment connecting the first end contour and the second end contour jointly define a first closed curve, and the first area range of the first closed curve is 300mm 2 -500mm 2between; the portion of the inner contour corresponding to the ear hook includes a first curve, the first curve has an extreme point in a first direction, and the first direction is perpendicular to the long axis direction of the projection of the sound-emitting part; the extreme point is located on the posterior side of the projection point of the upper vertex of the ear hook on the sagittal plane, and the upper vertex of the ear hook is the highest point of the inner wall of the ear hook along the vertical axis of the user in the wearing state.

[0007] In some embodiments, in the worn state, at least a portion of the shell is inserted into the concha cavity.

[0008] In some embodiments, along the long axis direction of the projection of the sound-emitting part, the distance between the extreme point and the projection point of the apex of the ear hook on the sagittal plane of the user is 6 mm-15 mm.

[0009] In some embodiments, in the long axis direction of the projection of the sound-emitting part, the part of the inner contour corresponding to the ear hook includes the leftmost end and the rightmost end, and the leftmost end and the rightmost end are respectively the two end points of the first curve. In the non-wearing state, in the long axis direction of the projection of the sound-emitting part, the distance between the leftmost end and the rightmost end is 25mm-35mm.

[0010] In some embodiments, in the long axis direction of the projection of the sound-emitting part, the portion of the inner contour corresponding to the ear hook includes the leftmost end, and in the non-worn state, in the first direction, the distance between the extreme point and the leftmost end is 20mm-25mm.

[0011] In some embodiments, in the long axis direction of the projection of the sound-emitting part, the portion of the inner contour corresponding to the ear hook includes the leftmost end, and in the non-worn state, in the first direction, the distance between the projection point of the upper vertex on the sagittal plane and the leftmost end is 17mm-22mm.

[0012] In some embodiments, when not worn, the distance between the projection point of the center of mass of the earphone on the sagittal plane and the extreme point is 20 mm-35 mm.

[0013] In some embodiments, in a non-worn state, the distance between the extreme point and the projection point of the center of mass of the sound-emitting part on the sagittal plane ranges from 20 mm to 30 mm.

[0014] In some embodiments, when not wearing the headset, the distance between the projection point of the apex of the ear hook on the sagittal plane and the projection point of the center of mass of the headset on the sagittal plane is 22 mm-35 mm.

[0015] In some embodiments, in a non-worn state, a distance between a projection point of the apex of the ear hook on the sagittal plane and a projection point of the center of mass of the sound-emitting part on the sagittal plane is 18 mm to 28 mm.

[0016] In some embodiments, the tangent segment is tangent to the first end contour at a first tangent point and is tangent to the second end contour at a second tangent point. When the open earphone is not worn, the area of ​​the triangle formed by the first tangent point, the second tangent point and the extreme point is within 150 mm. 2 -190mm 2 between.

[0017] In some embodiments, in a non-worn state, a distance between a projection point of the center of mass of the sound-emitting part on the sagittal plane and a projection point of the center of mass of the ear hook on the sagittal plane is 20 mm to 35 mm.

[0018] An embodiment of the present application also provides an earphone, which includes: a sound-emitting part, including a transducer and a shell for accommodating the transducer; an ear hook, the ear hook including a first part and a second part; in a worn state, the first part is hung between the user's auricle and the head, and the second part extends to the side of the auricle away from the head and connects to the sound-emitting part, so that the sound-emitting part is worn near the ear canal but does not block the ear canal opening; wherein, the ear hook and the sound-emitting part form a second projection on the user's sagittal plane, and the second projection includes an outer contour, a first end contour, an inner contour and a second end contour, and in a non-worn state, the inner contour, the first end contour, the second end contour and the tangent segment connecting the first end contour and the second end contour jointly define a second closed curve, and the second area range of the second closed curve is 50mm 2 -200mm 2 between; the portion of the inner contour corresponding to the ear hook includes a first curve, the first curve has an extreme point in a first direction, and the first direction is perpendicular to the long axis direction of the projection of the sound-emitting part; along the long axis direction of the projection of the sound-emitting part, the distance between the extreme point and the projection point of the upper vertex of the ear hook on the sagittal plane of the user is not greater than 5 mm, and the upper vertex of the ear hook is the highest point of the inner wall of the ear hook along the vertical axis of the user in the wearing state.

[0019] In some embodiments, in the worn state, at least a portion of the shell covers the anti-helix area.

[0020] In some embodiments, in the long axis direction of the projection of the sound-emitting part, the part of the inner contour corresponding to the ear hook includes the leftmost end and the rightmost end, and the leftmost end and the rightmost end are respectively the two endpoints of the first curve. In the long axis direction of the projection of the sound-emitting part, the distance between the leftmost end and the rightmost end is 25mm-35mm.

[0021] In some embodiments, in the long axis direction of the projection of the sound-emitting part, the portion of the inner contour corresponding to the ear hook includes the leftmost end, and in a non-worn state, in the first direction, the distance between the extreme point and the leftmost end is 15mm-20mm.

[0022] In some embodiments, in the long axis direction of the projection of the sound-emitting part, the portion of the inner contour corresponding to the ear hook includes the leftmost end, and in the non-worn state, in the first direction, the distance between the projection point of the upper vertex on the sagittal plane and the leftmost end is 12mm-17mm.

[0023] In some embodiments, when not worn, the distance between the projection point of the center of mass of the earphone on the sagittal plane and the extreme point is 15 mm-30 mm.

[0024] In some embodiments, in a non-worn state, the distance between the extreme point and the projection point of the center of mass of the sound-emitting part on the sagittal plane ranges from 15 mm to 25 mm.

[0025] In some embodiments, when not wearing the headset, the distance between the projection point of the apex of the ear hook on the sagittal plane and the projection point of the center of mass of the headset on the sagittal plane is 17 mm-30 mm.

[0026] In some embodiments, in a non-wearing state, a distance between a projection point of the apex of the ear hook on the sagittal plane and a projection point of the center of mass of the sound-emitting part on the sagittal plane is 10 mm to 20 mm.

[0027] In some embodiments, the tangent segment is tangent to the first end contour at a first tangent point and is tangent to the second end contour at a second tangent point. When the open earphone is not worn, the area of ​​the triangle formed by the first tangent point, the second tangent point and the extreme point is within 150 mm. 2 -190mm 2 between.

[0028] In some embodiments, in a non-worn state, a distance between a projection point of the center of mass of the sound-emitting part on the sagittal plane and a projection point of the center of mass of the ear hook on the sagittal plane is 25 mm to 40 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present application will be further described in the form of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, like numbers represent like structures, wherein:

[0030] Figure 1 is a schematic diagram of an exemplary auricle according to some embodiments of the present specification;

[0031] Figure 2 is an exemplary wearing diagram of headphones according to some embodiments of this specification;

[0032] Figure 3 is an exemplary structural diagram of an earphone according to some embodiments of this specification;

[0033] Figure 4 is a schematic diagram of an acoustic model formed by headphones according to some embodiments of this specification;

[0034] Figure 5 is a schematic diagram of the structure of the earphone in a non-wearing state according to some embodiments of this specification;

[0035] Figure 6 A first projection formed by projecting the earphone in a non-worn state onto the first plane according to some embodiments of this specification;

[0036] Figure 7 is an exemplary schematic diagram of a first curve of a projection of an earphone on a user's sagittal plane according to some embodiments of this specification;

[0037] Figure 8A and Figure 8B is a schematic diagram of an exemplary position structure of the center of mass of an earphone according to some embodiments of this specification;

[0038] Figure 9 is a schematic diagram of the center of mass of the earhook of an earphone according to other embodiments of this specification;

[0039] Figure 10 is a schematic diagram of a tangent segment of a first projection of an earphone according to some embodiments of this specification;

[0040] Figure 11 is a schematic diagram of a triangle formed by the center of mass of the ear hook, battery compartment, and sound-emitting part of the earphone according to some embodiments of this specification;

[0041] Figure 12 is an exemplary wearing diagram of headphones according to some other embodiments of this specification;

[0042] Figure 13 is a schematic diagram of an acoustic model formed by headphones according to some embodiments of this specification;

[0043] Figure 14 is a projection diagram of the earphone on the first plane in a non-wearing state according to some embodiments of this specification;

[0044] Figure 15 is a schematic diagram of a tangent segment of a second projection of an earphone according to some embodiments of this specification. DETAILED DESCRIPTION

[0045] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0046] It should be understood that the terms "system," "device," "unit," and / or "module" used herein are a method for distinguishing different components, elements, parts, portions, or assemblies at different levels. However, if other terms can achieve the same purpose, the terms may be replaced by other expressions.

[0047] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0048] In the description of this specification, it should be understood that the terms "first," "second," "third," "fourth," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of such features. In the description of this specification, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0049] In this specification, unless otherwise specified or limited, terms such as "connected" and "fixed" should be interpreted broadly. For example, the term "connected" can refer to a fixed connection, a removable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; and can refer to internal communication between two components or an interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this specification based on the specific circumstances.

[0050] Figure 1 is a schematic diagram of an exemplary auricle according to some embodiments of the present application. Figure 1The auricle 100 may include the ear canal 101, the cavum concha 102, the cymba concha 103, the triangular fossa 104, the antihelix 105, the scaphoid 106, the helix 107, the earlobe 108, the crus helix 109, the outer contour 1013, and the inner contour 1014. It should be noted that, for ease of description, in the embodiments of this specification, the crus 1011, the crus 1012, and the antihelix 105 are collectively referred to as the antihelix region. In some embodiments, one or more regions of the auricle 100 can be utilized to achieve wearability and stability of the acoustic device. In some embodiments, regions such as the ear canal 101, the cavum concha 102, the cymba concha 103, and the triangular fossa 104 have a certain depth and volume in three-dimensional space, which can be used to achieve wearability requirements of the acoustic device. For example, an acoustic device (e.g., an in-ear headphone) can be worn in the ear canal 101. In some embodiments, other regions of the auricle 100 besides the ear canal 101 can be utilized to achieve wearability of the acoustic device. For example, the wearing of the acoustic device can be achieved with the help of the bacula concha 103, the triangular fossa 104, the antihelix 105, the scaphoid 106, the helix 107 and other parts or their combination. In some embodiments, in order to improve the comfort and reliability of the acoustic device in wearing, it is also possible to further use the user's earlobe 108 and other parts. By using other parts of the auricle 100 except the ear canal 101 to achieve the wearing of the acoustic device and the propagation of sound, the user's ear canal 101 can be "liberated" and the impact of the acoustic device on the health of the user's ears can be reduced. When the user wears the acoustic device on the road, the acoustic device will not block the user's ear canal 101. The user can receive both the sound from the acoustic device and the sound from the environment (for example, horns, car bells, surrounding human voices, traffic control sounds, etc.), thereby reducing the probability of traffic accidents. For example, when the user wears the acoustic device, the entire or partial structure of the acoustic device can be located on the front side of the helix crus 109 (for example, Figure 1 For another example, when the user wears the acoustic device, the entire or partial structure of the acoustic device may contact the upper part of the ear canal 101 (for example, the location of one or more parts such as the crus helix 109, the cymba concha 103, the triangular fossa 104, the antihelix 105, the scaphoid 106, and the helix 107). For another example, when the user wears the acoustic device, the entire or partial structure of the acoustic device may be located in one or more parts of the auricle (for example, the cavum concha 102, the cymba concha 103, the triangular fossa 104, etc.) (for example, Figure 1 The middle dotted line encloses an area M1 that includes at least the cymba concha 103 and the triangular fossa 104 and an area M2 that includes at least the cavum concha 102).

[0051] Different users may have individual differences, resulting in different shapes, sizes and other dimensional differences in the auricle 100. For the sake of ease of description and understanding, unless otherwise specified, this specification will mainly use an auricle model with a "standard" shape and size as a reference to further describe how the acoustic device in different embodiments is worn on the auricle model. For example, a simulator containing a head and its (left and right) auricles 100, such as GRAS45BCKEMAR, made based on ANSI: S3.36, S3.25 and IEC: 60318-7 standards, can be used as a reference for wearing an acoustic device, thereby presenting a scenario in which most users normally wear the acoustic device. Just as an example, the auricle 100 used as a reference can have the following relevant characteristics: the size of the projection of the auricle on the sagittal plane in the vertical axis direction can be in the range of 49.5-74.3 mm, and the size of the projection of the auricle on the sagittal plane in the sagittal axis direction can be in the range of 36.6-55 mm. Therefore, in the present application, descriptions such as "worn by the user", "in a wearing state" and "in a wearing state" may refer to the acoustic device described in the present application being worn on the auricle 100 of the aforementioned simulator. Of course, taking into account the individual differences between different users, the structure, shape, size, thickness, etc. of one or more parts of the auricle 100 may be differentially designed according to auricles 100 of different shapes and sizes. These differentiated designs may be manifested in that the characteristic parameters of one or more parts of the acoustic device (for example, the sound-emitting part, ear hook, etc. mentioned below) may have different ranges of values, so as to adapt to different auricles 100. In addition, it should be noted that the "non-wearing state" is not limited to the state where the earphones are not worn on the user's auricle 100, but also includes the state where the earphones are not deformed by external force; the "wearing state" is not limited to the state where the earphones are worn on the user's auricle 100, and the suspension structure (for example, ear hook) and the sound-emitting part are spread out to a corresponding distance can also be regarded as a wearing state.

[0052] It should be noted that in fields such as medicine and anatomy, the human body can be defined as three basic planes: the sagittal plane, the coronal plane, and the horizontal plane, as well as three basic axes: the sagittal axis, the coronal axis, and the vertical axis. The sagittal plane is a plane perpendicular to the ground, drawn along the anterior-posterior direction of the body, dividing the body into left and right halves. The coronal plane is a plane perpendicular to the ground, drawn along the lateral direction of the body, dividing the body into anterior-posterior halves. The horizontal plane is a plane parallel to the ground, drawn along the lateral direction of the body, dividing the body into upper and lower halves. Accordingly, the sagittal axis is the axis along the lateral direction of the body and perpendicular to the coronal plane; the coronal axis is the axis along the lateral direction of the body and perpendicular to the sagittal plane; and the vertical axis is the axis along the lateral direction of the body and perpendicular to the horizontal plane. Furthermore, the "front side of the auricle" mentioned in this application is a concept relative to the "back side of the auricle". The former refers to the side of the auricle away from the head, and the latter refers to the side of the auricle toward the head. They are both for the user's auricle. Among them, by observing the auricle of the above simulator along the direction of the human coronal axis, it can be obtained Figure 1 Schematic diagram of the frontal outline of the auricle shown.

[0053] The description of the auricle 100 is for illustrative purposes only and is not intended to limit the scope of this application. A person skilled in the art can make various changes and modifications based on the description of this application. For example, a portion of the structure of the acoustic device can block part or all of the ear canal 101. Such changes and modifications remain within the scope of protection of this application.

[0054] Figure 2 This is an exemplary wearing diagram of the earphones according to some embodiments of this specification.

[0055] In some embodiments, the earphones 10 may include but are not limited to air conduction earphones and bone air conduction earphones, etc. In some embodiments, the earphones 10 may be combined with glasses, headphones, head-mounted display devices, AR / VR helmets, and other products.

[0056] like Figure 2As shown, the earphone 10 may include a sound-emitting portion 11 and an ear hook 12. In some embodiments, the earphone 10 can wear the sound-emitting portion 11 on the user's body (for example, the head, neck, or upper torso of the human body) through the ear hook 12. In some embodiments, the earphone 10 can fix the sound-emitting portion 11 near the ear canal but not block the ear canal through the ear hook 12, so that the user's auricle 100 remains open, and the user can hear the sound output by the earphone 10 while obtaining the sound of the external environment. For example, the earphone 10 can be arranged around or partially around the circumference of the user's auricle 100, and sound can be transmitted by air conduction or bone conduction.

[0057] In some embodiments, the ear hook 12 includes a first portion 121 and a second portion 122, which are connected in sequence. When worn, the first portion 121 of the ear hook 12 is positioned between the user's auricle and head, while the second portion 122 extends toward the side of the auricle away from the head and connects to the sound-emitting portion 11, placing the sound-emitting portion 11 near the ear canal without blocking it.

[0058] In some embodiments, to improve the stability of the earphone 10 when worn, the earphone 10 may employ any one or a combination of the following methods. First, at least a portion of the earhook 12 is configured as a contoured structure that conforms to at least one of the back of the auricle 100 or the head, thereby increasing the contact area between the earhook 12 and the auricle 100 and / or the head, thereby increasing the resistance of the earphone 10 to falling off the auricle 100. Second, at least a portion of the earhook 12 is configured as an elastic structure, which has a certain amount of deformation when worn, thereby increasing the positive pressure exerted by the earhook 12 on the auricle 100 and / or the head, thereby increasing the resistance of the earphone 10 to falling off the auricle 100. Third, at least a portion of the earhook 12 is configured to rest against the head when worn, generating a reaction force that presses against the auricle 100, so that the sound-emitting portion 11 is pressed against the front of the auricle 100, thereby increasing the resistance of the earphone 10 to falling off the auricle 100. Fourth, the sound-producing portion 11 and ear hook 12 are configured to clamp the areas of the antihelix 105 and the cavum conchae from both the front and back sides of the auricle 100 when worn, thereby increasing resistance to the earphone 10 falling off the auricle 100. Fifth, the sound-producing portion 11 or an auxiliary structure connected thereto is configured to at least partially extend into cavities such as the cavum conchae 102, the cymba conchae 103, the triangular fossa 104, and the scaphoid 106, thereby increasing resistance to the earphone 10 falling off the auricle 100.

[0059] In some embodiments, the ear hook 12 may have an arc-shaped structure that is compatible with the junction of the user's head and the auricle 100, so that the ear hook 12 can be hung between the user's auricle 100 and the head. Exemplarily, the first part 121 of the earphone 10 connects the second part 122 and the sound-emitting part 11, so that the earphone 10 is curved in three-dimensional space when it is in a non-worn state (that is, a natural state). In other words, in three-dimensional space, the second part 122, the first part 121, and the sound-emitting part 11 are not coplanar. It is arranged in this way so that when the earphone 10 is in a worn state, the second part 122 can be hung between the back side of the user's auricle 100 and the head, and the sound-emitting part 11 is connected to the front side of the user's auricle 100 (for example, Figure 1 region M3 in the auricle 100 (e.g., Figure 1 The first portion 121 and the second portion 122 can cooperate to clamp the auricle 100. Specifically, the first portion 121 can extend from the head toward the outside of the head, and then cooperate with the second portion 122 to provide the sound-producing portion 11 with a pressing force on the front side of the auricle 100 or the auricle 100. Under the action of the pressing force, the sound-producing portion 11 can be pressed against the front side of the auricle 100 or the areas where the cavum concha 102, cymba concha 103, fossa triangularis 104, and antihelix 105 are located, so that the earphone 10 does not block the ear canal 101 of the auricle 100 when the earphone 10 is in the worn state.

[0060] In some embodiments, the sound-emitting portion 11 includes a housing 111 and a transducer disposed in the housing 111 .

[0061] The shell 111 is connected to the ear hook 12 and is used to carry the transducer. In some embodiments, the shell 111 can be a closed shell structure with a hollow interior, and the transducer is located inside the shell 111. In some embodiments, the earphones 10 can be combined with products such as glasses, headphones, head-mounted display devices, AR / VR helmets, etc. In this case, the shell 111 can be fixed near the user's auricle 100 by hanging or clamping. In some alternative embodiments, a suspension structure (e.g., a hook) may be provided on the shell 111. For example, the shape of the hook matches the shape of the auricle, and the earphones 10 can be worn independently on the user's auricle 100 by the hook.

[0062] In some embodiments, the housing 111 may be a housing structure having a shape adapted to the human auricle 100, for example, a circular ring, an elliptical shape, a racetrack shape, a polygon (regular or irregular), a U-shape, a V-shape, a semicircular shape, or other regular or irregular shapes, so that the housing 111 can be directly attached to the user's auricle 100. In some embodiments, the housing 111 may further include a fixing structure. The fixing structure may include an ear hook, an elastic band, etc., so that the earphones 10 can be better worn on the user and prevent the user from falling off during use.

[0063] In some embodiments, when the user wears the earphone 10, the sound-emitting portion 11 may be located above, below, or in front of the user's auricle 100 (for example, Figure 1 The sound-emitting portion 11 may also be provided with two or more acoustic holes (e.g., a sound outlet and a pressure relief hole) for transmitting sound. In some embodiments, the transducer in the sound-emitting portion 11 may output sounds with a phase difference (e.g., opposite phases) through the two or more acoustic holes.

[0064] The transducer is used to convert an excitation signal (e.g., an electrical signal) into corresponding mechanical vibrations to generate sound. In some embodiments, the transducer may include a diaphragm. When the diaphragm vibrates, sound may be emitted from the front and rear sides of the diaphragm, respectively. In some embodiments, a front cavity (not shown) is provided at the front side of the diaphragm within the housing 111 for transmitting sound. The front cavity is acoustically coupled to an acoustic hole (e.g., a sound outlet hole), and sound from the front side of the diaphragm can be emitted from the sound outlet hole through the front cavity. A rear cavity (not shown) is provided at the rear side of the diaphragm within the housing 111 for transmitting sound. The rear cavity is acoustically coupled to another acoustic hole (e.g., a pressure relief hole), and sound from the rear side of the diaphragm can be emitted from the pressure relief hole through the rear cavity. In some embodiments, the movement may include a movement housing 111 (not shown), which, together with the diaphragm of the transducer, defines the front and rear cavities of the transducer. It should be noted that when the diaphragm vibrates, the front and rear sides of the diaphragm can simultaneously generate a set of sounds with a phase difference (e.g., opposite phases). After passing through the front and rear cavities, the sound propagates outward from the sound outlet and pressure relief holes acoustically coupled to the front and rear cavities, respectively. In some embodiments, the structures of the front and rear cavities can be configured so that the sound output by the transducer at the sound outlet and pressure relief holes meet specific conditions. For example, the lengths of the front and rear cavities can be designed so that the sound outlet and pressure relief holes can output a set of sounds with a specific phase relationship (e.g., opposite phases).

[0065] In some embodiments, the sound-emitting part 11 may have a long axis direction X, a short axis direction Y and a thickness direction Z that are orthogonal to each other. Among them, the long axis direction X can be defined as the direction with a larger extension dimension in the shape of the two-dimensional projection surface of the sound-emitting part 11 (for example, the projection of the sound-emitting part 11 on the plane of its inner side (the side close to the auricle 100) or the projection on the sagittal plane) (for example, when the projection shape is a rectangle or an approximate rectangle, the long axis direction is the length direction of the rectangle or the approximate rectangle). For ease of explanation, this specification will be described with reference to the projection of the sound-emitting part on the sagittal plane. The short axis direction Y can be defined as the direction perpendicular to the long axis direction X in the shape of the projection of the sound-emitting part 11 on the sagittal plane (for example, when the projection shape is a rectangle or an approximate rectangle, the short axis direction is the width direction of the rectangle or the approximate rectangle). The thickness direction Z can be defined as a direction perpendicular to the sagittal plane, for example, consistent with the direction of the coronal axis, both pointing to the left and right directions of the body.

[0066] In some embodiments, when the user wears the earphone 10, the sound-emitting portion 11 may be fixed near the user's ear canal 101 but not blocking the ear canal. In some embodiments, when the earphone 10 is worn, the projection of the earphone 10 on the sagittal plane may not cover the user's ear canal. For example, the projection of the sound-emitting portion 11 on the sagittal plane may fall on the left and right sides of the head and be located in front of the tragus on the human body sagittal axis (e.g., Figure 2 At this time, the sound-producing part 11 is located in front of the user's tragus, and the long axis of the sound-producing part 11 can be in a vertical or approximately vertical state. The projection of the short axis direction Y on the sagittal plane is consistent with the direction of the sagittal axis, the projection of the long axis direction X on the sagittal plane is consistent with the direction of the vertical axis, and the thickness direction Z is perpendicular to the sagittal plane. For another example, the projection of the sound-producing part 11 on the sagittal plane can fall on the antihelix 105 (e.g., Figure 2 (The position shown by the dashed box C in the figure). At this point, the sound-producing portion 11 is at least partially located at the antihelix 105, with the long axis of the sound-producing portion 11 horizontal or approximately horizontal. The projection of the long axis X of the sound-producing portion 11 on the sagittal plane is aligned with the sagittal axis, the projection of the short axis Y on the sagittal plane is aligned with the vertical axis, and the thickness direction Z is perpendicular to the sagittal plane. This prevents the sound-producing portion 11 from blocking the ear canal, freeing up the user's ears. It also increases the contact area between the sound-producing portion 11 and the auricle 100, thereby improving the wearing comfort of the earphone 10.

[0067] In some embodiments, when the earphone 10 is worn, the projection of the earphone 10 on the sagittal plane may also cover or at least partially cover the ear canal of the user. For example, the projection of the sound-emitting portion 11 on the sagittal plane may fall within the cavum concha 102. In this case, the sound-emitting portion 11 is at least partially located within the cavum concha 102, and the sound-emitting portion 11 is in a tilted state (e.g., Figure 2(The position shown in the dashed box B in the middle). In this case, the major axis X and the minor axis Y remain parallel or approximately parallel to the sagittal plane. The projection of the minor axis Y of the sound-emitting portion 11 on the sagittal plane can form a certain angle with the direction of the sagittal axis, that is, the minor axis Y is also tilted accordingly. The projection of the major axis X on the sagittal plane can form a certain angle with the direction of the sagittal axis, that is, the major axis X is also tilted. The thickness direction Z is perpendicular to the sagittal plane. At this time, because the concha cavity 102 has a certain volume and depth, there is a certain distance between the medial surface of the earphone 10 and the concha cavity. The ear canal can communicate with the outside world through the leakage structure between the medial surface and the concha cavity, thereby freeing the user's ears. At the same time, the sound-emitting portion 11 and the concha cavity can cooperate to form an auxiliary cavity (i.e., the cavity structure mentioned later) that communicates with the ear canal. In some embodiments, the sound outlet can be at least partially located in the aforementioned auxiliary cavity, and the sound output from the sound outlet will be restricted by the aforementioned auxiliary cavity, that is, the aforementioned auxiliary cavity can gather the sound so that the sound can be transmitted more into the ear canal, thereby increasing the volume and quality of the sound heard by the user in the near field, thereby improving the acoustic effect of the earphone 10.

[0068] In addition, the wearing position of the sound-emitting part 11 is not limited to Figure 2 The positions A, B, C, etc. shown in Figure 1 For example, the entire or partial structure of the sound-producing portion 11 may be located in front of the helix crus 109 (e.g., Figure 1 For another example, the entirety or a portion of the structure of the sound-producing part 11 may be in contact with the upper portion of the auditory canal 101 (for example, the location of one or more of the crus helix 109, cymba concha 103, triangular fossa 104, antihelix 105, scaphoid 106, and helix 107). For another example, the entirety or a portion of the structure of the sound-producing part 11 may be located in a cavity formed by one or more of the locations of the auricle 100 (for example, the cavum concha 102, cymba concha 103, and triangular fossa 104). Figure 1 The middle dotted line encloses an area M1 that includes at least the cymba concha 103 and the triangular fossa 104 and an area M2 that includes at least the cavum concha 102).

[0069] The description of the above-mentioned earphones 10 is for illustrative purposes only and is not intended to limit the scope of this application. Those skilled in the art can make various changes and modifications based on the description of this application. For example, the earphones 10 may further include a battery assembly, a Bluetooth assembly, etc., or a combination thereof. The battery assembly can be used to power the earphones 10. The Bluetooth assembly can be used to wirelessly connect the earphones 10 to other devices (e.g., a mobile phone, a computer, etc.). These changes and modifications are still within the scope of protection of this application.

[0070] Figure 3This is an exemplary structural diagram of headphones according to some embodiments of this specification. Figure 2 and Figure 3 , Figure 2 The left ear is shown in the figure. Figure 3 The right ear is shown.

[0071] like Figure 3 As shown, the ear hook 12 is an arc-shaped structure that fits snugly at the junction of the user's head and the auricle 100. The sound-emitting portion 11 (or the housing 111 of the sound-emitting portion 11) may have a connection end CE connected to the ear hook 12 and a free end FE not connected to the ear hook 12. When the earphone 10 is worn, the first portion 121 of the ear hook 12 is positioned between the user's auricle 100 and the head, while the second portion 122 of the ear hook 12 extends toward the side of the auricle 100 facing away from the head and connects to the connection end CE of the sound-emitting portion 11, allowing the sound-emitting portion 11 to be at least partially inserted into the cavum concha 102. For example, the free end FE of the sound-emitting portion 11 may extend into the cavum concha 102. In other words, the projection of the housing of the sound-emitting portion 11 on the sagittal plane overlaps with the projection of the cavum concha 102 on the sagittal plane. For example, the projection of the sound-emitting portion 11 on the sagittal plane may fall within the cavum concha 102. When worn, the projection of the earphone 10 on the sagittal plane can also cover or at least partially cover the user's ear canal. At this time, the sound-producing part 11 is located in the M2 area above the concha cavity 102 and the ear canal 101 ( Figure 1 ), the long axis direction X of the sound-emitting part 11 is tilted (as shown in Figure 2 Position B shown). The long axis X and short axis Y of the sound-producing portion 11 remain parallel or approximately parallel to the sagittal plane. The projection of the short axis Y of the sound-producing portion 11 on the sagittal plane can form a certain angle with the direction of the sagittal axis, that is, the short axis Y is also tilted accordingly. The projection of the long axis X on the sagittal plane can form a certain angle with the direction of the sagittal axis, that is, the long axis X is also tilted. The thickness direction Z is perpendicular to the sagittal plane. This structure of the ear hook 12 and sound-producing portion 11 provides a better fit with the user's auricle 100, increases the resistance of the earphone 10 to falling off the auricle 100, and thus improves the wearing stability of the earphone 10.

[0072] In some embodiments, when worn, as viewed along the thickness direction Z, the connection end CE of the sound-emitting portion 11 is closer to the top of the head than the free end FE, so that the free end FE can extend into the concha cavity. Based on this, the angle between the short-axis direction Y and the direction of the human body's sagittal axis can be between 30° and 40°. If the angle is too small, the free end FE may not be able to extend into the concha cavity, and the sound outlet hole on the sound-emitting portion 11 may be too far from the ear canal. If the angle is too large, the sound-emitting portion 11 may not be able to extend into the concha cavity, and the ear canal may be blocked by the sound-emitting portion 11. In other words, this arrangement allows the sound-emitting portion 11 to extend into the concha cavity while ensuring an appropriate distance between the sound outlet hole on the sound-emitting portion 11 and the ear canal, so that the user can hear more of the sound produced by the sound-emitting portion 11 without blocking the ear canal.

[0073] In some embodiments, the first portion 121 of the ear hook 12 includes a battery compartment 13. The battery compartment 13 houses a battery electrically connected to the sound-emitting portion 11. In some embodiments, the battery compartment 13 is located on the end of the first portion 121 away from the sound-emitting portion 11. The projection of the end of the ear hook 12 away from the sound-emitting portion 11 corresponds to the projection of the free end of the battery compartment 13 on the user's sagittal plane. In some embodiments, when the user wears the earphones 10, the sound-emitting portion 11 and the battery compartment 13 can be located on the front and back sides of the auricle, respectively.

[0074] In some embodiments, see Figure 3 , the sound-emitting portion 11 may have an inner side surface facing the auricle along the thickness direction Z and an outer side surface OS away from the auricle in the wearing state, as well as a connecting surface connecting the inner side surface and the outer side surface OS. It should be noted that: in the wearing state, observed along the thickness direction Z, the sound-emitting portion 11 may be set to a circular, elliptical, rounded square, rounded rectangle or the like. Among them, when the sound-emitting portion 11 is set to a circular, elliptical or other shape, the above-mentioned connecting surface may refer to the arc-shaped side surface of the sound-emitting portion 11; and when the sound-emitting portion 11 is set to a rounded square, rounded rectangle or the like, the above-mentioned connecting surface may include the lower side surface LS, upper side surface US and rear side surface RS mentioned later. Therefore, for the convenience of description, this embodiment takes the sound-emitting portion 11 as a rounded rectangle as an example for illustrative explanation. Among them, the length of the sound-emitting portion 11 in the major axis direction X may be greater than the width of the sound-emitting portion 11 in the minor axis direction Y. As Figure 3 As shown, the sound-emitting portion 11 may have an upper side surface US facing away from the auditory canal 101 along the short axis direction Y when worn, a lower side surface LS facing the auditory canal 101, and a rear side surface RS connecting the upper side surface US and the lower side surface LS. When worn, the rear side surface RS is located at the end facing the back of the head along the long axis direction X and is at least partially located within the cavum concha 102. The free end FE of the sound-emitting portion 11 is located on the rear side surface RS.

[0075] In some embodiments, the sound-emitting portion 11 and the ear hook 12 can jointly clamp the auricle 100 area corresponding to the cavum concha from the front and back sides of the auricle 100 area, thereby increasing the resistance of the earphone 10 to falling off from the auricle 100, thereby improving the stability of the earphone 10 when worn. For example, the free end FE of the sound-emitting portion 11 is pressed into the cavum concha in the thickness direction Z. In some embodiments, the free end FE abuts against the cavum concha in the major axis direction X and the minor axis direction Y (for example, the free end FE abuts against the inner wall of the cavum concha). Here, the free end FE can refer to a specific area away from the connecting end CE obtained by cutting the sound-emitting portion 11 along the YZ plane (the plane formed by the minor axis direction Y and the thickness direction Z), and the ratio of the major axis dimension of the specific area to the major axis dimension of the sound-emitting portion can be 0.05-0.2.

[0076] It should be noted that: in the wearing state, the free end FE of the sound-producing part 11 can not only extend into the concha cavity, but also be projected onto the antihelix, or onto the left and right sides of the head and located in front of the auricle on the sagittal axis of the human body. In other words, the ear hook 12 can support the sound-producing part 11 to be worn in the concha cavity, antihelix, front of the auricle, etc. Figure 3 Taking the earphone 10 shown as an example, the earphone 10 is described in detail. It should be noted that, without violating the corresponding acoustic principles, Figure 3 The structure of the earphone 10 and its corresponding parameters can also be applied to the earphones of other configurations mentioned above.

[0077] By extending the sound-emitting portion 11 at least partially into the cavum concha 102, the listening volume at the listening position (e.g., the ear canal), especially the listening volume of mid- and low-frequency sounds, can be increased while still maintaining a good far-field sound leakage cancellation effect. For illustrative purposes only, when the entire or partial structure of the sound-emitting portion 11 extends into the cavum concha 102, the sound-emitting portion 11 and the cavum concha 102 form a structure similar to a cavity (hereinafter referred to as a quasi-cavity). In the embodiments of the specification, the quasi-cavity can be understood as a semi-enclosed structure enclosed by the side surfaces of the sound-emitting portion 11 and the cavum concha 102 structure. This semi-enclosed structure is not completely sealed and isolated from the external environment, but rather has a leakage structure (e.g., an opening, a gap, a pipe, etc.) that is acoustically connected to the external environment. When the user wears the earphone 10, one or more sound outlet holes can be provided on the side of the shell of the sound-emitting part 11 close to or facing the user's ear canal, and one or more pressure relief holes can be provided on the other side of the shell of the sound-emitting part 11 (for example, the side away from or facing away from the user's ear canal). The sound outlet hole is acoustically coupled with the front cavity of the earphone 10, and the pressure relief hole is acoustically coupled with the back cavity of the earphone 10. Taking the sound-emitting part 11 including a sound outlet hole and a pressure relief hole as an example, the sound output by the sound outlet hole and the sound output by the pressure relief hole can be approximately regarded as two sound sources, and the sound waves of the two sound sources are in opposite phases. The inner walls corresponding to the sound-emitting part 11 and the cavum conchae 102 form a cavity-like structure, wherein the sound source corresponding to the sound outlet hole is located inside the cavity-like structure, and the sound source corresponding to the pressure relief hole is located outside the cavity-like structure, forming a cavity-like structure. Figure 4 The acoustic model shown.

[0078] Figure 4 Schematic diagram of the acoustic model formed by the earphones shown in some embodiments of this specification. Figure 4As shown, the cavity-like structure 402 may include a listening position and at least one sound source 401A. Here, "include" may mean that at least one of the listening position and the sound source 401A is inside the cavity-like structure 402, or it may mean that at least one of the listening position and the sound source 401A is at the inner edge of the cavity-like structure 402. The listening position may be equivalent to the entrance of the auricle, or it may be an acoustic reference point of the auricle, such as the ear reference point (ERP), the ear-drum reference point (DRP), etc., or it may be an entrance structure leading to the listener, etc. Since the sound source 401A is wrapped by the cavity-like structure 402, most of the sound radiated by it will reach the listening position by direct radiation or reflection. In contrast, in the absence of the cavity-like structure 402, most of the sound radiated by the sound source 401A will not reach the listening position. Therefore, the setting of the cavity structure significantly increases the volume of the sound reaching the listening position. At the same time, only a small portion of the anti-phase sound radiated by anti-phase sound source 401B outside cavity-like structure 402 enters cavity-like structure 402 through leakage structure 403 of cavity-like structure 402. This is equivalent to generating a secondary sound source 401B' at leakage structure 403, whose intensity is significantly lower than that of sound source 401B and also significantly lower than that of sound source 401A. The sound generated by secondary sound source 401B' has a weak anti-phase cancellation effect on sound source 401A within the cavity, significantly increasing the listening volume at the listening position. Regarding sound leakage, the sound radiated by sound source 401A to the outside world through the cavity's leakage structure 403 is equivalent to generating a secondary sound source 401A' at leakage structure 403. Since almost all of the sound radiated by sound source 401A is output from leakage structure 403, and the scale of cavity-like structure 402 is much smaller than the spatial scale of the sound leakage evaluation (at least an order of magnitude different), the intensity of secondary sound source 401A' can be considered comparable to that of sound source 401A. For the external space, the secondary sound source 401A' and the sound source 401B form a dual sound source to cancel each other out and reduce leakage sound.

[0079] In a specific application scenario, the outer wall surface of the shell of the sound-emitting part 11 is usually a plane or a curved surface, and the contour of the user's cavum concha 102 is an uneven structure. By extending part or all of the sound-emitting part 11 into the cavum concha 102, a cavity-like structure communicating with the outside world is formed between the contours of the sound-emitting part 11 and the cavum concha 102. Furthermore, the sound outlet is set at a position of the shell of the sound-emitting part 11 facing the user's ear canal and close to the edge of the cavum concha 102 (for example, the inner side IS), and the pressure relief hole is set at a position where the sound-emitting part 11 is away from or far away from the ear canal. Figure 4 The acoustic model shown enables the user to improve the listening position at the ear opening when wearing the earphone 10 and reduce the sound leakage effect in the far field.

[0080] In some embodiments, by designing the shape and size of the ear hook 12, the compatibility between the ear hook 12 and the user's ear can be improved, and the wearing stability and adjustability of the earphone 10 can be improved. At the same time, the ear hook 12 can also be adjusted to wear the sound-emitting part 11 to the specific position of the user's auricle, thereby improving the listening effect of the earphone 10.

[0081] To facilitate understanding and description of the shape of the earphones 10 in both the non-worn and worn states, the earphones 10 can be projected onto a specific plane and described using parameters related to the projected shape on this plane. By way of example only, in the worn state, the earphones 10 can be projected onto the human sagittal plane to form a corresponding projected shape. In the non-worn state, a first plane similar to the human sagittal plane can be constructed based on the relative positional relationship between the human sagittal plane and the earphones 10, such that the projected shape of the earphones 10 on the first plane approximates the projected shape of the earphones 10 on the human sagittal plane. The first plane can be determined as follows: When the earhook 12 is placed on a flat support surface (such as a horizontal tabletop, a ground plane, etc.), and the earhook 12 is in contact with the support surface and positioned stably, the support plane is the first plane corresponding to the earphones 10 at that time. Of course, to maintain consistency between the specific planes corresponding to the worn and non-worn states, the first plane can also be the human sagittal plane. In some embodiments, the first plane can also refer to the plane defined by the bisector that bisects or approximately bisects the earhook 12 along its length.

[0082] [1] Figure 5 This is a schematic diagram of the structure of the earphones in a non-wearing state according to some embodiments of this specification. Figure 6 It is a first projection formed by projecting the earphone in a non-worn state onto the first plane according to some embodiments of this specification.

[0083] Combine Figure 5 and Figure 6 In some embodiments, the first projection includes an outer contour, a first end contour, an inner contour, and a second end contour. The first end contour may be a projection contour of the free end FE of the sound-emitting portion 11 on the first plane. The two endpoints P0 and P1 of the first end contour are projection points of the intersection of the free end FE and other parts of the sound-emitting portion 11 on the first plane. For the division of the free end FE, please refer to the specification. Figure 3 The second end contour can be the projection of the end BE of the earhook 12 onto the first plane. The two endpoints Q0 and Q1 of the second end contour are the projection points of the intersection of the end BE and the rest of the earhook 12 onto the first plane. The outer contour can be the contour whose first projection is between points P1 and Q1. The inner contour can be the contour whose first projection is between points P0 and Q0.

[0084] It should be noted that the end BE of the earhook 12 may be at least a portion of the end of the first portion of the earhook 12 that is distal to the second portion. The end of the first portion of the earhook 12 that is distal to the second portion may be a regular or irregular structure. To further illustrate the end BE of the earhook 12, an exemplary embodiment is provided. For example, if the end of the first portion of the earhook 12 that is distal to the second portion is a rectangular parallelepiped structure with a flat end wall, the end BE of the earhook 12 may be the side surface of the end of the first portion of the earhook 12 that is distal to the second portion. For another example, if the end of the first portion of the earhook 12 that is distal to the second portion is a sphere, ellipsoid, or irregular structure, the end BE of the earhook 12 may be the area extending from the farthest point distal to the second portion in the direction of extension of the first portion of the earhook 12, extending a specific distance toward the second portion. The ratio of this specific distance to the total extension distance of the first portion of the earhook 12 may be in the range of 0.05-0.2.

[0085] Taking the projection of the sound-emitting portion 11 on the first plane 60 as a rectangular shape (for example, a runway shape) as an example, the projection of the sound-emitting portion 11 includes parallel or approximately parallel upper and lower side projections, as well as a first end contour connecting the upper and lower side projections. The first end contour can be a straight line segment or a circular arc, and points P0 and P1 respectively represent the two ends of the first end contour. For illustrative purposes only, point P0 can be the intersection of the arc formed by the projection of the free end FE and the line segment of the upper side projection. Similar to point P0, point P1 can be the intersection of the arc formed by the projection of the free end FE and the line segment of the lower side projection. Similarly, the end of the ear hook away from the sound-emitting portion 11 also has a free end. The projection of the free end of the ear hook on the first plane 60 forms a second end contour. The second end contour can be a straight line segment or a circular arc. Points Q0 and Q1 respectively represent the two ends of the second end contour. In some embodiments, point Q0 and point Q1 can be the two end points of a line segment or arc projected from the free end of the first part 121 of the ear hook in the direction away from the second part 122 of the ear hook on the first plane 60. Furthermore, in the long axis direction X of the sound-emitting part 11, the endpoint close to the sound-emitting part 11 is point Q0, and the endpoint away from the sound-emitting part 11 is Q1.

[0086] The projection shape of the earphone 10 on the first plane 60 and the sagittal plane of the human body can reflect the wearing method of the earphone 10 on the auricle. For example, the area of ​​the first projection can reflect the area of ​​the auricle that the earphone 10 can cover when worn, as well as the contact method between the sound-emitting part 11 and the ear hook and the auricle. In some embodiments, since the sound-emitting part 11 is not in direct contact with the first part 121 of the ear hook, the inner contour, outer contour, first end contour, and second end contour in the first projection form a non-closed area. The size of this area is closely related to the wearing effect of the earphone 10 (for example, wearing stability, sound emission position, etc.). For ease of understanding, in some embodiments, a tangent segment 50 connecting the first end contour and the second end contour can be determined, and the tangent segment 50, the inner contour, and the first end contour together define a first closed curve, and the area of ​​the area enclosed by the first closed curve is the first area. The first closed curve can reflect the degree of fit between the sound-emitting part 11 and the ear hook 12 and the auricle when the earphone 10 is worn.

[0087] Considering that the relative position of the sound-emitting portion 11 and the user's ear canal (e.g., the concha cavity) will affect the number of leakage structures of the cavity-like structure formed by the sound-emitting portion 11 and the user's concha cavity and the size of the opening of the leakage structure, and the size of the opening of the leakage structure will directly affect the listening quality, specifically, when the first area is too large, the sound-emitting portion 11 may not be able to abut the edge of the concha cavity, resulting in an increase in the sound component directly radiated outward by the sound-emitting portion 11 and less sound reaching the listening position, thereby reducing the sound efficiency of the sound-emitting portion 11. In some embodiments, considering the overall structure of the earphone 10 and the shape of the ear hook needing to adapt to the space between the auricle and the head, the first area of ​​the first closed curve is within the range of 300mm 2 -500mm 2 In some embodiments, a too small first area may result in a too small distance between the ear hook extreme point and the sound emitting portion 11, or an excessively large clamping force between the ear hook and the sound emitting portion on the user's auricle. Therefore, in some embodiments, the first area is not less than 200mm. 2 In summary, in order to reduce the sound directly radiated outward by the sound-emitting portion 11, ensure the listening volume of the earphone 10 at the listening position (for example, at the opening of the ear canal), and improve the comfort of the user when wearing it, in some embodiments, the first area of ​​the first closed curve is within the range of 250mm 2 -400mm 2 between.

[0088] When the first area of ​​the first closed curve is set to 300mm 2 -500mm 2When the ear hook 12 is in the ear, the shape and size of the ear hook 12 itself need to be further adjusted. On the one hand, the ear hook 12 can be adapted to the user's ear, improving the wearing stability and adjustability of the earphone 10. On the other hand, the sound-emitting part 11 connected to the ear hook 12 can be tilted sufficiently so that the free end FE of the sound-emitting part 11 can be located in the concha cavity 102, thereby improving the listening effect of the earphone 10. Figure 7 The first curve in question illustrates the shape and dimensions of the ear hook 12 .

[0089] Figure 7 This is an exemplary schematic diagram of a first curve of a projection of an earphone on a user's sagittal plane according to some embodiments of this specification.

[0090] In some embodiments, as Figure 7 As shown, the first curve L1 in the projection of the ear hook 12 on the user's sagittal plane can be used as a reference curve for the ear hook 12. In some embodiments, since the area where the ear hook 12 contacts the user's ear when the earphone 10 is worn is mainly the inner contour of the ear hook 12, the first curve L1 can be a reference curve corresponding to the inner contour of the projection of the ear hook 12 on the user's sagittal plane. In some embodiments, in the long axis direction X of the projection of the sound-emitting part 11, the curve corresponding to the inner contour of the projection of the ear hook 12 on the user's sagittal plane has a leftmost end (point P') and a rightmost end (point Q'), and the portion of the curve between point P' and point Q' of the inner contour of the projection of the ear hook 12 on the user's sagittal plane is the first curve L1. The actual corresponding position of point P' on the ear hook 12 is point P, and the actual corresponding position of point Q' on the ear hook 12 is point Q, as shown in FIG. Figure 3 By designing the characteristics of the first curve L1 (such as the extreme points, etc.), the shape and size of the ear hook 12 can be determined, thereby improving the fit of the ear hook 12 to the user's ear and enhancing the wearing stability and adjustability of the earphone 10. On the other hand, the ear hook 12 can be adjusted to fix the sound-emitting part 11 to the specific position of the user's ear, thereby improving the listening experience of the earphone 10.

[0091] When the first area of ​​the first closed curve is set to 300mm 2 -500mm 2After that, it is necessary to define the size of the first closed curve along the long axis of the projection of the sound-emitting portion 11. If the size of the first closed curve along the long axis of the projection of the sound-emitting portion 11 is too small, the connection between the ear hook 12 and the sound-emitting portion and its end BE will clamp the user's auricle too tightly. If the size of the first closed curve along the long axis of the projection of the sound-emitting portion 11 is too large, the distance between the sound-emitting portion 11 and the upper vertex of the ear hook (described below) will be too small, resulting in the free end FE of the sound-emitting portion 11 not being able to be located within the cavum concha 102. In some embodiments, the size of the first closed curve along the long axis of the projection of the sound-emitting portion 11 can be represented by the distance between the leftmost end (point P') and the rightmost end (point Q') of the first curve L1 along the long axis of the projection of the sound-emitting portion 11. In some embodiments, the distance between the leftmost end (point P') and the rightmost end (point Q') of the first curve L1 along the long axis of the projection of the sound-emitting portion 11 ranges from 25 mm to 35 mm. In some embodiments, to ensure better wearing stability of the earphone 10, the distance between the leftmost end (point P') and the rightmost end (point Q') of the first curve L1 along the longitudinal axis of the projection of the sound-emitting portion 11 ranges from 28 mm to 33 mm. In some embodiments, to allow the free end FE of the sound-emitting portion 11 to be closer to the edge of the cavum concha 102, thereby increasing the volume of the cavity-like structure and improving the sound emission efficiency of the sound-emitting portion 11, the distance between the leftmost end (point P') and the rightmost end (point Q') of the first curve L1 along the longitudinal axis of the projection of the sound-emitting portion 11 ranges from 30 mm to 32 mm.

[0092] Please refer to Figure 7 In some embodiments, the long axis X of the projection of the sound-emitting part 11 on the sagittal plane can be used as the x-axis, the short axis Y as the y-axis, and the intersection of the x-axis and the y-axis as the origin o to establish a first rectangular coordinate system xoy. The first curve L1 can be regarded as a curve in the first rectangular coordinate system xoy.

[0093] In some embodiments, the y-axis direction can be referred to as the first direction, that is, the first direction is perpendicular to the long axis direction X of the projection of the sound-emitting portion 11 on the user's sagittal plane and is directed toward the top of the user's head. In some embodiments, in the first rectangular coordinate system xoy, the first curve L1 has an extreme point N' in the first direction. By setting the positional relationship between the extreme point N' and other position points on the ear hook 12 and the sound-emitting portion 11, the wearing condition of the earphone 10 (for example, the mechanical parameters when worn and the position of the sound-emitting portion 11 relative to the ear when worn) can be adjusted. Please refer to Figure 3 and Figure 7 In some embodiments, the extreme point N' is located behind the vertex K of the ear hook 12 (represented by the projection point K' of the vertex K on the user's sagittal plane). In other words, in the projection of the ear hook 12 on the user's sagittal plane, the extreme point N' is located closer to the back of the user's head than the projection point K' of the vertex K.

[0094] In some embodiments, the corresponding point of the extreme point N' on the ear hook 12 is point N, such as Figure 3 In some embodiments, the ear hook plane of the ear hook 12 (e.g. Figure 11 The angle between the plane S1 in the ear hook and the sagittal plane of the user is determined to determine the corresponding point N of the extreme point N' on the ear hook 12. In some embodiments, in the wearing state, the ear hook plane and the sagittal plane of the user can be parallel.

[0095] In some embodiments, the upper vertex K of the ear hook 12 may be the highest point of the inner contour of the ear hook 12 along the vertical axis of the user in the wearing state, such as Figure 3 In some embodiments, when the user wears the earphone 10, the ear 100 can mainly support the earphone 10 through the upper vertex K of the ear hook 12. In some embodiments, the upper vertex K of the ear hook 12 can be the position where the inner contour of the ear hook 12 is most curved when the user is wearing the earphone 10, as shown in FIG. Figure 3 and Figure 7 In some embodiments, the upper vertex K of the ear hook 12 can be the point on the inner contour of the ear hook 12 that is farthest from the end of the ear hook 12 (i.e., the free end of the end of the first portion 121, the end of the ear hook 12 not connected to the sound-emitting portion 11) when worn, as shown in FIG. Figure 3 and Figure 7 In some embodiments, the position of the upper vertex K of the ear hook 12 can simultaneously meet one or more of the above three positions.

[0096] like Figure 3 As shown, when the earphone 10 is worn, the sound-emitting part 11 needs to extend into the concha cavity. The distance between the extreme point N of the ear hook and the upper vertex K in the long axis direction X of the sound-emitting part 11 can affect the degree to which the sound-emitting part 11 extends into the concha cavity and the orientation of the sound-emitting part 11 in the concha cavity, thereby affecting the cavity-like structure formed by the sound-emitting part 11 extending into the concha cavity.

[0097] When the distance between the extreme point N of the ear hook and the upper vertex K in the long axis direction X of the sound-emitting part 11 is too large, the fit between the first part 121 of the ear hook 12 and the ear 100 will deteriorate, thereby reducing the wearing stability of the earphone 10. Alternatively, the orientation of the sound-emitting part 11 in the cavum concha 102 (for example, the long axis direction X) will be too close to the vertical axis, and the gap between the upper side surface US of the sound-emitting part 11 and the cavum concha will be too large, that is, the cavity-like opening formed is too large, and the sound source contained (that is, the sound outlet located on the inner side surface IS) directly radiates more sound components into the environment, and the sound reaching the listening position is smaller. At the same time, the sound from the external sound source entering the cavity-like cavity will increase, resulting in the cancellation of near-field sound, and thus the deterioration of the listening effect.

[0098] If the distance between the earhook extreme point N and the upper vertex K along the long axis X of the sound-emitting portion 11 is too small, the angle between the orientation of the sound-emitting portion 11 within the cavum concha (e.g., along the long axis X) and the vertical axis will be too large. This will result in the gaps between the upper side surface US of the sound-emitting portion 11 and the cavum concha being too small or too few in number, resulting in a cavity-like opening that is too small or too few, and poor sound leakage reduction. Furthermore, if this distance is too small, the upper side surface US of the sound-emitting portion 11 may abut against the inner wall of the cavum concha, and may even excessively squeeze the user's cavum concha, causing discomfort and affecting the wearing comfort of the earphone 10.

[0099] Therefore, in order to enable the sound-emitting portion 11 to abut against the edge of the concha cavity, and at the same time enable the inner side of the sound-emitting portion 11 and the sound outlet provided thereon to be arranged directly opposite the ear canal, thereby improving the sound-emitting efficiency of the sound-emitting portion 11, and making the number of leakage structures of the cavity-like structure formed by the sound-emitting portion 11 and the user's concha cavity and the opening size of the leakage structures appropriate to ensure the effect of reducing sound leakage and the wearing comfort of the earphone 10, the projection area formed by the inner contour of the ear hook 12 and the size of the ear hook 12 can be limited at the same time. In some embodiments, when the first area of ​​the first closed curve is set within a range of 200mm 2 -500mm 2 When the distance between the extreme point N' and the projection point K' of the upper vertex K along the long axis X of the sound-emitting part 11 is 6mm-15mm, the distance between the extreme point N' and the projection point K' of the upper vertex K along the long axis X of the sound-emitting part 11 can be 6mm-15mm. In some embodiments, since the x-axis is parallel to the long axis X of the sound-emitting part 11, the distance between the extreme point N' and the projection point K' of the upper vertex K along the long axis X of the sound-emitting part 11 can be the distance between the horizontal coordinate of the extreme point N' and the horizontal coordinate of the projection point K' of the vertex K. In some embodiments, in order to obtain a better listening effect, when the range of the first area of ​​the first closed curve is set to 250mm 2 -450mm 2 When the distance between the extreme point N' and the projection point K' of the vertex K on the ear hook 12 on the user's sagittal plane along the long axis X of the projection of the sound-emitting part 11 can be 7mm-12mm. In some embodiments, in order to further improve the sound leakage reduction effect, when the range of the first area of ​​the first closed curve is set to 300mm 2 -400mm 2 When , along the long axis direction X of the projection of the sound-emitting part 11 , the distance between the extreme point N′ and the projection point K′ of the vertex K on the ear hook 12 on the user's sagittal plane can be 8mm-11mm.

[0100] It should be noted that the method for measuring the relevant distances and angles of the projection of the earphone 10 on the user's sagittal plane can be: for the earphone 10, take a photo parallel to the projection plane (the user's sagittal plane), measure the relevant distances and angles on the photo, and then convert them according to the scale of the photo to obtain the actual data of the relevant distances and angles on the projection plane.

[0101] In some embodiments, in addition to reflecting the distance between the ear hook extreme point N and the upper vertex K by the distance of the above-mentioned projection point, it is also possible to measure it on the ear hook 12. In some embodiments, when the range of the first area of ​​the first closed curve is set to 200mm 2 -500mm 2 In some embodiments, in order to further improve the sound leakage reduction effect, when the range of the first area of ​​the first closed curve is set to 250mm, the distance between the ear hook extreme point N and the upper vertex K can be 6mm-12mm. 2 -450mm 2 In some embodiments, in order to make the cavity-like structure formed by the sound-emitting part 11 and the concha cavity have a more appropriate volume and opening size / number, when the first area of ​​the first closed curve is set to be within the range of 300mm 2 -450mm 2 When between, on the ear hook 12, the distance between the ear hook extreme point N and the upper vertex K can be 8mm-11mm.

[0102] After defining the shape and size of the ear hook 12, in order to ensure that the sound-emitting portion 11 can be inserted into the concha cavity, it is necessary to further define the wearing angle of the sound-emitting portion 11 relative to the auricle and the concha cavity. In some embodiments, in order to allow the entire or partial area of ​​the sound-emitting portion 11 to extend into the concha cavity and increase the area of ​​the concha cavity covered by the sound-emitting portion 11, when the earphone 10 is worn, Figure 7 As shown, the long axis direction X of the projection of the sound-emitting part 11 is parallel to the horizontal direction (i.e. Figure 7 In some embodiments, in order to reduce the size of the gap between the sound-emitting part 11 and the edge of the concha cavity and improve the listening volume of the ear canal, the long axis direction X of the projection of the sound-emitting part 11 is aligned with the horizontal direction (i.e. Figure 7 The inclination angle α of the projection of the sound-producing part 11 in the sagittal direction (shown in FIG. 1 ) can be in the range of 15°-20°. In some embodiments, the long axis X of the projection of the sound-producing part 11 is aligned with the horizontal direction (i.e. Figure 7 The inclination angle α of the sagittal axis direction shown can range from 15° to 18°.

[0103] When the first area of ​​the first closed curve is set to 300mm 2-500mm 2 After that, it is necessary to define the distance of the first closed curve along the short axis (i.e., the first direction) of the projection of the sound-emitting portion 11. The distance of the first closed curve along the first direction of the projection of the sound-emitting portion 11 affects the position of the sound-emitting portion 11 and the cavum concha. If this distance is too small, the sound-emitting portion 11 cannot extend into the cavum concha. If this distance is too large, the gap between the sound-emitting portion 11 and the cavum concha is too large, resulting in poor listening quality. In some embodiments, the distance of the first closed curve along the first direction of the projection of the sound-emitting portion 11 can be represented by the distance between the extreme point N' in the first direction and the leftmost end (point P') of the first curve L1. In some embodiments, to ensure that the sound-emitting portion 11 can extend into the cavum concha, the distance between the extreme point N' and the leftmost end (point P') of the first curve L1 in the first direction ranges from 20 mm to 25 mm. In some embodiments, to ensure that the gap between the sound-emitting portion 11 and the cavum concha is of appropriate size, the distance between the extreme point N' and the leftmost end (point P') of the first curve L1 ranges from 20 mm to 23 mm. In some embodiments, to ensure wearing comfort of the earphone, the distance between the extreme point N' and the leftmost end (point P') of the first curve L1 ranges from 20 mm to 22 mm.

[0104] Similarly, in some embodiments, the distance in the first direction of the projection of the first closed curve on the sound-emitting portion 11 can be represented by the distance between the projection point K' of the upper vertex K in the first direction and the leftmost end (point P') of the first curve L1. In some embodiments, to ensure that the sound-emitting portion 11 can extend into the cavum concha, in the first direction, the distance between the projection point K' of the upper vertex K and the leftmost end (point P') of the first curve L1 ranges from 17 mm to 22 mm. In some embodiments, to make the gap size between the sound-emitting portion 11 and the cavum concha moderate, the distance between the projection point K' of the upper vertex K and the leftmost end (point P') of the first curve L1 ranges from 17 mm to 20 mm. In some embodiments, to ensure the wearing comfort of the earphones, the distance between the projection point K' of the upper vertex K and the leftmost end (point P') of the first curve L1 ranges from 18 mm to 20 mm.

[0105] Figure 8A and Figure 8B This is a schematic diagram of an exemplary position structure of the center of mass of an earphone according to some embodiments of this specification.

[0106] like Figure 8A and Figure 8BAs shown, in some embodiments, the center of mass of the earphone 10 is located at point F. In some embodiments, due to the influence of the internal structure of the sound-producing portion 11 (such as the magnetic circuit, circuit board, etc.), the mass of the sound-producing portion 11 of the earphone 10 is relatively large. Therefore, the position of the center of mass F of the earphone 10 is close to the position H of the center of mass of the sound-producing portion 11, or is significantly affected by the mass of the sound-producing portion 11. In other words, the position of the center of mass F of the earphone 10 can, to a certain extent, represent the position of the sound-producing portion 11. For ease of explanation, the specific position of the center of mass F of the earphone 10 is described in detail below based on the relative position of the center of mass F of the earphone 10 and the sound-producing portion 11.

[0107] Please refer to Figure 8A In some embodiments, the distance between the center of mass F of the earphone 10 and the lower side surface LS of the sound-emitting portion 11 on the XY plane can be 2 mm to 6 mm. In some embodiments, the distance between the center of mass F of the earphone 10 and the lower side surface LS of the sound-emitting portion 11 on the XY plane can be 3 mm to 5 mm. In some embodiments, the distance between the center of mass F of the earphone 10 and the lower side surface LS of the sound-emitting portion 11 on the XY plane can be 4 mm to 4.5 mm.

[0108] In some embodiments, the distance between the center of mass F of the earphone 10 and the long axis of the sound-emitting portion 11 (i.e., the x-axis) on the XY plane can be 1 mm to 3 mm. In some embodiments, the distance between the center of mass F of the earphone 10 and the long axis of the sound-emitting portion 11 (i.e., the x-axis) on the XY plane can be 1.5 mm to 2.8 mm. In some embodiments, the distance between the center of mass F of the earphone 10 and the long axis of the sound-emitting portion 11 (i.e., the x-axis) on the XY plane can be 2 mm to 2.5 mm.

[0109] In some embodiments, the distance between the center of mass F of the earphone 10 and the free end FE (i.e., the rear side RS) of the sound-emitting portion 11 on the XY plane can be 4 mm to 8 mm. In some embodiments, the distance between the center of mass F of the earphone 10 and the free end FE (i.e., the rear side RS) of the sound-emitting portion 11 on the XY plane can be 5 mm to 7 mm. In some embodiments, the distance between the center of mass F of the earphone 10 and the free end FE (i.e., the rear side RS) of the sound-emitting portion 11 on the XY plane can be 6 mm to 6.8 mm.

[0110] Please refer to Figure 8BIn some embodiments, the distance between the center of mass F of the earphone 10 and the inner side surface IS of the sound-emitting portion 11 on the XZ plane may be 2 mm to 6 mm. In some embodiments, the distance between the center of mass F of the earphone 10 and the inner side surface IS of the sound-emitting portion 11 on the XZ plane may be 3 mm to 5 mm. In some embodiments, the distance between the center of mass F of the earphone 10 and the inner side surface IS of the sound-emitting portion 11 on the XZ plane may be 4.5 mm to 4.8 mm.

[0111] In some embodiments, the design of the center of mass F, upper vertex K, and earhook extreme point N of the earphone 10 can improve the wearing stability and adjustability of the earphone 10. In some embodiments, since the ear portion 100 primarily supports the earphone 10 via the upper vertex K of the earhook 12, when the user wears the earphone 10, it can be considered to form a "support lever" with the upper vertex K as the support point. When worn, the center of mass F of the earphone 10 is located behind the upper vertex K (i.e., closer to the back of the user's head). This prevents the earphone 10 from tipping forward (i.e., away from the back of the user's head) when worn, thereby improving the wearing stability of the earphone 10. In some embodiments, the earhook extreme point N can be the location of the smallest cross-section on the earhook 12, making it easier for the earhook 12 to deform at the earhook extreme point N. As a result, when the user wears the earphone 10, the first portion 121 of the earhook 12 and the sound-emitting portion 11 form a "clamping lever" structure with the earhook extreme point N as the fulcrum, clamping the ear on both sides of the user's ear (e.g., the front and back sides of the cavum concha). To improve the stability of the "support lever" and "clamping force lever," the center of mass F and upper vertex K of the earphone 10 are located on either side of the earhook extreme point N. The positions of the center of mass F, upper vertex K, and earhook extreme point N are described in further detail below.

[0112] Because the position of the earphone 10's center of mass F is significantly affected by the position of the sound-emitting portion 11, when the overall volume of the earhook 12 remains relatively unchanged, the position between the upper vertex K and the earphone 10's center of mass F reflects, to a certain extent, the relative position of the sound-emitting portion 11 within the ear when the earphone 10 is worn. Specifically, when the distance between the earphone 10's center of mass F and the upper vertex K of the earhook 12 is too large, the sound-emitting portion 11 may be positioned closer to the user's ear canal opening when the user wears the earphone 10, causing the sound-emitting portion 11 to be positioned lower within the cavum concha, and the gap between the upper side US of the sound-emitting portion 11 and the cavum concha to be too large, resulting in a weaker listening experience. When the distance between the center of mass position F of the earphone 10 and the upper vertex K of the ear hook 12 is too small, the upper side surface US of the sound-emitting part 11 fits into the upper edge of the cavum concha, and the gap between the upper side surface US and the cavum concha is too small or too few, resulting in poor sound leakage reduction effect, and the sound outlet on the sound-emitting part 11 is too far away from the external auditory canal, which has an adverse effect on the listening effect.

[0113] like Figure 6 As shown, in some embodiments, in order to obtain a better listening effect, the distance between the projection point K' of the upper vertex K and the projection point F' of the center of mass F of the earphone 10 on the projection of the earphone 10 on the user's sagittal plane may be 22mm-35mm. In some embodiments, in order to further improve the sound leakage reduction effect, the distance between the projection point K' of the upper vertex K and the projection point F' of the center of mass F of the earphone 10 on the projection of the earphone 10 on the user's sagittal plane may be 25mm-30mm. In some embodiments, in order to make the cavity-like structure formed by the sound-emitting part 11 and the concha cavity have a more appropriate volume and opening size / number, the distance between the projection point K' of the upper vertex K and the projection point F' of the center of mass F of the earphone 10 on the projection of the earphone 10 on the user's sagittal plane may be 27mm-29mm.

[0114] In some embodiments, to achieve a better listening experience, the distance between the upper vertex K and the center of mass F of the earphone 10 can be 20mm-38mm. In some embodiments, to further improve the effect of reducing sound leakage, the distance between the upper vertex K and the center of mass F of the earphone 10 can be 25mm-32.5mm. In some embodiments, to ensure that the cavity-like structure formed by the sound-emitting portion 11 and the cavum concha has a more appropriate volume and opening size / number, the distance between the upper vertex K and the center of mass F of the earphone 10 can be 27mm-30mm.

[0115] In some embodiments, the angle α1 between the line connecting the center of mass F of the earphone 10 and the upper vertex K of the earhook 12 and the long axis X of the sound-emitting portion 11 may affect the stability of the earphone 10 when worn. When the angle α1 between the line connecting the center of mass F of the earphone 10 and the upper vertex K of the earhook 12 and the long axis X of the sound-emitting portion 11 is too large, the free end FE of the sound-emitting portion 11 will be far away from the side of the user's cavum concha, and the sound-emitting portion 11 will not hold the cavum concha firmly, resulting in an unstable wearing experience. When the angle α1 between the line connecting the center of mass F of the earphone 10 and the upper vertex K of the earhook 12 and the long axis X of the sound-emitting portion 11 is too small, the free end FE of the sound-emitting portion 11 will fit too tightly with the user's cavum concha, affecting the wearing comfort of the earphone 10 and reducing the adjustability of the earphone 10.

[0116] In some embodiments, in order to make the earphone 10 have higher wearing stability and adjustability, on the projection of the earphone 10 on the sagittal plane of the user, the angle α1 between the line K'F' between the projection point K' of the upper vertex K and the projection point F' of the center of mass F of the earphone 10 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 can be in the range of 35°-60°. It should be noted that the angle α1 between the line K'F' between the projection point K' of the upper vertex K and the projection point F' of the center of mass F of the earphone 10 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 refers to the angle between the line K'F' in the counterclockwise direction and the x-axis with the positive direction of the x-axis as the reference, as shown in FIG. Figure 6 As shown. In some embodiments, in order to further improve the wearing stability of the earphone 10, the angle α1 between the line K'F' connecting the projection point K' of the upper vertex K and the projection point F' of the center of mass F of the earphone 10 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 can be in the range of 40°-55°. In some embodiments, in order to further improve the adjustability of the earphone 10, the angle α1 between the line K'F' connecting the projection point K' of the upper vertex K and the projection point F' of the center of mass F of the earphone 10 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 can be in the range of 45°-50°.

[0117] In some embodiments, in addition to using the position of the projection point to reflect the angle α1 between the line connecting the center of mass F of the earphone 10 and the upper vertex K and the long axis X of the sound-emitting portion 11, actual measurement can also be performed on the earhook 12. In some embodiments, to ensure that the earphone 10 has greater wearing stability and adjustability, the angle α1 between the line connecting the center of mass F of the earphone 10 and the upper vertex K of the earhook 12 and the long axis X of the sound-emitting portion 11 can be 30°-55°. In some embodiments, to further improve the wearing stability of the earphone 10, the angle α1 between the line connecting the center of mass F of the earphone 10 and the upper vertex K of the earhook 12 and the long axis X of the sound-emitting portion 11 can be 40°-50°. In some embodiments, to further improve the adjustability of the earphone 10, the angle α1 between the line connecting the center of mass F of the earphone 10 and the upper vertex K of the earhook 12 and the long axis X of the sound-emitting portion 11 can be 45°-48°.

[0118] like Figure 3As shown in Figure 8 , in some embodiments, the projection of the center of mass F of the earphone 10 onto the user's sagittal plane is point F'. Referring to Figure 8 , in some embodiments, when the earphone 10 is not being worn, the distance between the center of mass F of the earphone 10 and the extreme point of the earhook is also related to wear stability and the foreign body sensation at the connection point between the ear and the head. In some embodiments, when the distance between the center of mass F of the earphone 10 and the extreme point N of the earhook is too large, the earphone 10 may be clamped too low on the ear, potentially resulting in poor fit between the sound-producing portion 11 and the cavum concha when worn. This, in turn, affects the cavity-like structure and leads to unstable wearing. This can cause the cavity-like gap formed between the sound-producing portion 11 and the cavum concha to be too large, thereby degrading the listening experience. When the distance between the center of mass F of the earphone 10 and the extreme point N of the earhook is too small, the force arms at both ends of the fulcrum of the aforementioned "clamping force lever" may be too small. This, with a constant clamping force, can lead to poor stability of the lever structure, potentially causing the earphone 10 to be unstable when worn.

[0119] In some embodiments, in order to ensure that the earphone 10 has high wearing stability and good listening effect when worn, the distance between the extreme point N' and the projection point F' of the center of mass F of the earphone 10 on the projection of the earphone 10 on the sagittal plane of the user may be 20mm-35mm. In some embodiments, in order to further improve the wearing stability of the earphone 10, the distance between the extreme point N' and the projection point F' of the center of mass F of the earphone 10 on the projection of the earphone 10 on the sagittal plane of the user may be 25mm-30mm. In some embodiments, in order to further improve the listening effect, the distance between the extreme point N' and the projection point F' of the center of mass F of the earphone 10 on the projection of the earphone 10 on the sagittal plane of the user may be 27mm-28mm.

[0120] In some embodiments, to ensure that the earphone 10 has high wearing stability and good listening quality when worn, the distance between the center of mass F of the earphone 10 and the earhook extreme point N on the earphone 10 can be 18mm-40mm. In some embodiments, to further improve wearing stability, the distance between the center of mass F of the earphone 10 and the earhook extreme point N on the earphone 10 can be 24mm-31mm. In some embodiments, to further improve listening quality, the distance between the center of mass F of the earphone 10 and the earhook extreme point N can be 26mm-29mm.

[0121] In some embodiments, as Figure 7As shown, on the projection of the earphone 10 on the user's sagittal plane, the first angle α2 formed between the line N'F' connecting the extreme point N' and the projection point F' of the earphone's center of mass, and the longitudinal axis X (i.e., the x-axis) of the projection of the sound-producing portion 11 can be less than 90°. This allows the projection point F' of the earphone's center of mass F to be located behind the extreme point N' along the longitudinal axis X of the sound-producing portion 11. Because the center of mass F of the earphone 10 is primarily influenced by the mass of the sound-producing portion 11, the position of the center of mass F also reflects, to a certain extent, the position of the sound-producing portion 11 in clamping the cavum concha. That is, the clamping position of the sound-producing portion 11 in clamping the cavum concha is closer to the back of the user's head than the earhook's extreme point N, further enhancing the stability of the aforementioned "clamping force lever." It should be noted that the first angle α2 between the line N'F' connecting the extreme point N' and the projection point F' of the center of mass of the earphone 10 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 refers to the angle between the line N'F' and the x-axis in the counterclockwise direction with the positive direction of the x-axis as the reference, as shown in FIG. Figure 7 shown.

[0122] In some embodiments, the size of the first angle α2 between the line connecting the center of mass F of the earphone 10 and the extreme point N of the ear hook and the long axis direction X of the sound-emitting portion 11 determines to a certain extent the shape of the inner contour of the earphone 10, and the shape of the inner contour is related to the user's wearing feeling. Specifically, in order to ensure that the ear hook fits the user's ear or head when the user wears the earphone 10, if the angle is too large or too small, it may cause the shape to change when worn, affecting the fit and may not form a perfect fit. Figure 4 The cavity-like structure shown affects the sound-producing efficiency of the sound-producing portion 11. Specifically, when the first angle α2 between the line connecting the center of mass F of the earphone 10 and the earhook extreme point N and the long axis X of the sound-producing portion 11 is too large, the clamping position of the sound-producing portion 11 is too low relative to the cavum concha, and the gap between the upper side US and the cavum concha is too large, resulting in a weak listening experience. When the first angle α2 between the line connecting the center of mass F of the earphone 10 and the earhook extreme point N and the long axis X of the sound-producing portion 11 is too small, the clamping position of the sound-producing portion 11 is too high relative to the cavum concha, the upper side US is closely aligned with the upper edge of the cavum concha, and the gap between the upper side US and the cavum concha is too small or too few, resulting in poor sound leakage reduction. Due to the limited space in the user's cavum concha, clamping the sound-producing portion 11 too low or too high relative to the cavum concha can easily make it difficult for the earphone 10 to be stably clamped to the user's ear due to the shape of the cavum concha.

[0123] In some embodiments, to achieve a better listening experience, the first angle α2 between the line N'F' connecting the extreme point N' and the projection point F' of the center of mass F of the earphone 10 and the long axis X (i.e., the x-axis) of the projection of the sound-emitting portion 11 can be in the range of 60°-80°. In some embodiments, to further improve the sound leakage reduction effect, the first angle α2 between the line N'F' connecting the extreme point N' and the projection point F' of the center of mass F of the earphone 10 and the long axis X (i.e., the x-axis) of the projection of the sound-emitting portion 11 can be in the range of 60°-75°. In some embodiments, in order to make the cavity-like structure formed by the sound-emitting part 11 and the cavum concha have a more suitable volume and opening size / number, and to make the clamping position of the sound-emitting part 11 located at a better position in the cavum concha, the first angle α2 between the line N'F' between the extreme point N' and the projection point F' of the center of mass F of the earphone 10 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 can be in the range of 65°-70°.

[0124] In some embodiments, in addition to reflecting the first angle α2 between the line connecting the center of mass F of the earphone 10 and the extreme point N of the earhook and the long axis X of the sound-emitting portion 11 through the position of the above-mentioned projection point, actual measurement can also be performed on the earhook 12. In some embodiments, to achieve a better listening experience, on the earphone 10, the first angle α2 between the line connecting the center of mass F of the earphone 10 and the extreme point N of the earhook and the long axis X of the sound-emitting portion 11 can be in the range of 50°-90°. In some embodiments, to further improve the sound leakage reduction effect, on the earphone 10, the first angle α2 between the line connecting the center of mass F of the earphone 10 and the extreme point N of the earhook and the long axis X of the sound-emitting portion 11 can be in the range of 55°-85°. In some embodiments, in order to make the cavity-like structure formed by the sound-emitting part 11 and the cavum concha have a more suitable volume and opening size / number, and to make the clamping position of the sound-emitting part 11 located at a better position in the cavum concha, on the earphone 10, the first angle α2 between the line connecting the center of mass F of the earphone 10 and the extreme point N of the earhook and the long axis direction X of the sound-emitting part 11 can be in the range of 60°-75°.

[0125] In some embodiments, in addition to setting the position of the center of mass F of the earphone 10, the position of the center of mass H of the sound-emitting portion 11 can also be directly set to improve the wearing stability and listening effect of the earphone 10. Figure 3 and Figure 4As shown, in some embodiments, the projection point of the center of mass H of the sound-emitting portion 11 on the user's sagittal plane can coincide with the centroid of the projection of the sound-emitting portion 11 on the user's sagittal plane. In some embodiments, by changing the distance between the center of mass H of the sound-emitting portion 11 and the extreme point N of the earhook on the earphone 10, the coverage position of the sound-emitting portion 11 in the cavum concha and the clamping position of the sound-emitting portion 11 in the cavum concha when worn can be simultaneously changed. This can not only affect the stability and comfort of the user wearing the earphone 10, but also affect the listening experience of the earphone 10.

[0126] When the shape and size of the sound-producing portion 11 are consistent, if the distance between the center of mass H of the sound-producing portion 11 and the earhook extreme point N is too large, the sound-producing portion 11 will be positioned lower within the cavum concha, and the gap between the upper side US of the sound-producing portion 11 and the cavum concha will be too large, resulting in a poor listening experience. Furthermore, if the distance between the center of mass H of the sound-producing portion 11 and the earhook extreme point N is too large, excessive interference will occur between the sound-producing portion 11 (or the connection area between the earhook 12 and the sound-producing portion 11) and the tragus, causing the sound-producing portion 11 to excessively press against the tragus, affecting wearing comfort.

[0127] When the shape and size of the sound-producing portion 11 are consistent, if the distance between the center of mass H of the sound-producing portion 11 and the extreme point N of the ear hook is too small, the upper side US of the sound-producing portion 11 will fit closely with the upper edge of the cavum concha. The gaps between the upper side US and the cavum concha will be too small or too few, and the interior will be completely sealed from the external environment, making it impossible to form a cavity-like structure. Moreover, if the distance between the center of mass H of the sound-producing portion 11 and the extreme point N of the ear hook is too small, the sound-producing portion 11 (or the connection area between the ear hook 12 and the sound-producing portion) will excessively squeeze the outer contour of the ear, which will also affect wearing comfort.

[0128] In some embodiments, the projection point of the center of mass H of the sound-emitting portion 11 onto the user's sagittal plane and the centroid of the projection of the sound-emitting portion 11 onto the user's sagittal plane are both point H', and point H' is located on the long axis of the projection of the sound-emitting portion 11, i.e., point H' is located on the x-axis. In some embodiments, to provide a better listening experience when the earphone 10 is worn, the distance between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting portion 11 onto the user's sagittal plane can be 20 mm to 30 mm. In some embodiments, to further improve sound leakage reduction, the distance between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting portion 11 onto the user's sagittal plane can be 22 mm to 26 mm. In some embodiments, to ensure that the cavity-like structure formed by the sound-emitting portion 11 and the cavum concha has a more appropriate volume and opening size / number, and to ensure that the clamping position of the sound-emitting portion 11 is located at a more optimal position within the cavum concha, the distance between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting portion 11 onto the user's sagittal plane can be 23 mm to 25 mm.

[0129] In some embodiments, in addition to reflecting the distance between the center of mass H of the sound-emitting part 11 and the earhook extreme point N by the distance of the above-mentioned projection points, actual measurement can also be performed on the earhook 12. In some embodiments, on the earphone 10, in order to make the earphone 10 have a better listening effect when wearing, the distance between the center of mass H of the sound-emitting part 11 and the earhook extreme point N can be 20mm-30mm. In some embodiments, in order to further improve the sound leakage reduction effect, on the earphone 10, the distance between the center of mass H of the sound-emitting part 11 and the earhook extreme point N can be 24mm-26mm. In some embodiments, in order to make the cavity-like structure formed by the sound-emitting part 11 and the cavum concha have a more suitable volume and opening size / number, and to make the clamping position of the sound-emitting part 11 at a better position in the cavum concha, on the earphone 10, the distance between the center of mass H of the sound-emitting part 11 and the earhook extreme point N can be 24mm-26mm.

[0130] In some embodiments, the second angle α3 between the line connecting the center of mass H of the sound-emitting portion 11 and the earhook extreme point N, and the long axis X of the sound-emitting portion 11, can affect the position of the sound-emitting portion 11 within the cavum concha. When the second angle α3 between the line connecting the center of mass H of the sound-emitting portion 11 and the earhook extreme point N, and the long axis X of the sound-emitting portion 11, is too large, the position of the sound-emitting portion 11 within the cavum concha is biased downward, and the gap between the upper side surface US of the sound-emitting portion 11 and the cavum concha is too large, resulting in a weak listening effect. When the second angle α3 between the line connecting the center of mass H of the sound-emitting portion 11 and the earhook extreme point N, and the long axis X of the sound-emitting portion 11, is too small, the upper side surface US of the sound-emitting portion 11 fits against the upper edge of the cavum concha, and the gaps between the upper side surface US and the cavum concha are too small or too few, resulting in poor sound leakage reduction.

[0131] In some embodiments, the second angle α3 between the line N'H' between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 11 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 can be less than 90°, so that the projection point H' of the center of mass H of the sound-emitting part 11 is located on the rear side of the extreme point N' in the long axis direction X of the sound-emitting part 11, that is, the center of mass H of the sound-emitting part 11 is closer to the back of the user's head than the corresponding point N of the extreme point N' on the ear hook 12, so as to further enhance the stability of the aforementioned "clamping force lever". It should be noted that the second angle α3 between the line N'H' between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 11 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 refers to the angle between the line N'H' in the counterclockwise direction and the x-axis with the positive direction of the x-axis as the reference, as shown in FIG. Figure 4 shown.

[0132] In some embodiments, to achieve a better listening experience, the second angle α3 between the line N'H' connecting the extreme point N' and the projection point H' of the center of mass H of the sound-emitting portion 11 and the long axis X (i.e., the x-axis) of the projection of the sound-emitting portion 11 can be in the range of 65°-85°. In some embodiments, to further improve the sound leakage reduction effect, the second angle α3 between the line N'H' connecting the extreme point N' and the projection point H' of the center of mass H of the sound-emitting portion 11 and the long axis X (i.e., the x-axis) of the projection of the sound-emitting portion 11 can be in the range of 70°-80°. In some embodiments, in order to make the cavity-like structure formed by the sound-emitting part 11 and the cavum concha have a more suitable volume and opening size / number, and to make the clamping position of the sound-emitting part 11 located at a better position in the cavum concha, the second angle α3 between the line N'H' between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 11 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 can be in the range of 75°-79°.

[0133] In some embodiments, in addition to reflecting the second angle α3 between the line connecting the center of mass H of the sound-emitting portion 11 and the extreme point N of the earhook and the long axis X of the sound-emitting portion 11 through the position of the above-mentioned projection point, actual measurement can also be performed on the earhook 12. In some embodiments, to achieve a better listening experience, on the earphone 10, the second angle α3 between the line connecting the center of mass H of the sound-emitting portion 11 and the extreme point N of the earhook and the long axis X of the sound-emitting portion 11 can be in the range of 70°-85°. In some embodiments, to further improve the sound leakage reduction effect, on the earphone 10, the second angle α3 between the line connecting the center of mass H of the sound-emitting portion 11 and the extreme point N of the earhook and the long axis X of the sound-emitting portion 11 can be in the range of 75°-80°. In some embodiments, in order to make the cavity-like structure formed by the sound-emitting part 11 and the cavum concha have a more suitable volume and opening size / number, and to make the clamping position of the sound-emitting part 11 located at a better position in the cavum concha, on the earphone 10, the second angle α3 between the line between the center of mass H of the sound-emitting part 11 and the extreme point N of the earhook and the long axis direction X of the sound-emitting part 11 can be in the range of 77°-80°.

[0134] In some embodiments, on the user's sagittal plane, a first angle α2 between the line N'F' connecting the extreme point N' and the projection point F' of the center of mass F of the earphone 10 and the longitudinal axis X (i.e., the x-axis) of the projection of the sound-emitting portion 11 is smaller than a second angle α3 between the line N'H' connecting the extreme point N' and the projection point H' of the center of mass H of the sound-emitting portion 11 and the longitudinal axis X (i.e., the x-axis). In other words, the first angle α2 between the line N'F' and the x-axis is smaller than the second angle α3 between the line N'H' and the x-axis. This causes the center of mass F of the earphone 10 to be located behind the center of mass H of the sound-emitting portion 11 along the longitudinal axis X of the sound-emitting portion 11, i.e., the center of mass F of the earphone 10 is closer to the back of the user's head than the center of mass H of the sound-emitting portion 11. This arrangement allows the ear hook 12 to better clamp the ear of the user when the earphone 10 is worn, further enhancing the stability of the aforementioned "clamping force lever."

[0135] In some embodiments, the angle α4 between the line connecting the earhook extreme point N and the center of mass H of the sound-emitting portion 11 and the plane S1 of the earhook 12 (also referred to as the earhook plane S1) can affect the extent to which the sound-emitting portion 11 penetrates the user's cavum concha when the earphone 10 is worn. If the angle α4 between the line connecting the earhook extreme point N and the center of mass H of the sound-emitting portion 11 and the plane of the earhook 12 is too small, the sound-emitting portion 11 may penetrate too deeply into the cavum concha, and the sound-emitting portion 11 may be too close to the opening of the user's ear canal. In this case, the opening of the ear canal is effectively blocked to a certain extent, preventing communication between the ear canal and the external environment, thus defeating the original design purpose of the earphone 10. If the angle α4 between the line connecting the earhook extreme point N and the center of mass H of the sound-emitting portion 11 and the plane of the earhook 12 is too large, the sound-emitting portion 11 may be prevented from protruding into the cavum concha (for example, resulting in an excessively large gap between the sound-emitting portion 11 and the cavum concha), thereby affecting the listening experience of the sound-emitting portion 11.

[0136] Figure 9 Schematic diagram of the center of mass of the ear hook of the headset according to other embodiments of this specification.

[0137] refer to Figure 9 In some embodiments, in order to ensure the comfort of wearing the earphone 10, the distribution of the weight of the ear hook needs to be considered. In order to reduce the pressure of the ear hook's fulcrum (for example, the extreme point or the upper vertex) on the auricle, the center of mass position of the ear hook (such as point M) can be set near the sound-emitting part 11. In this way, after the sound-emitting part 11 extends into the concha cavity, the concha cavity can simultaneously support part of the weight of the sound-emitting part 11 and the ear hook, reducing the pressure of the ear hook's fulcrum on the auricle. The center of mass of the ear hook mentioned here refers to the center of mass of the ear hook as a whole (including the battery compartment 13 but excluding the sound-emitting part 11). As Figure 9As shown, point T5 is the endmost point of the outer contour of the first projection along the long axis of the sound-producing portion 11. In some embodiments, considering the weight relationship between the ear hook and the sound-producing portion 11, the distance L3 between the ear hook's center of mass and point T5 along the long axis of the sound-producing portion 11 is between 22 mm and 49 mm. In some embodiments, to position the ear hook's center of mass closer to the contact area on the sound-producing portion 11 with the edge of the cavum concha (to better support the ear hook in the cavum concha), the distance L3 between the ear hook's center of mass and point T5 is between 25 mm and 25 mm.

[0138] In some embodiments, as Figure 3 As shown, in addition to setting the position of the center of mass F of the earphone 10, the position of the center of mass H of the sound-emitting portion 11 can also be directly set to improve the wearing stability and listening effect of the earphone 10. Figure 3 and Figure 4 As shown, in some embodiments, the projection point of the center of mass H of the sound-emitting portion 11 on the user's sagittal plane can coincide with the centroid of the projection of the sound-emitting portion 11 on the user's sagittal plane. In some embodiments, by changing the distance between the center of mass H of the sound-emitting portion 11 and the extreme point N of the earhook on the earphone 10, the coverage position of the sound-emitting portion 11 in the cavum concha and the clamping position of the sound-emitting portion 11 in the cavum concha when worn can be simultaneously changed. This can not only affect the stability and comfort of the user wearing the earphone 10, but also affect the listening experience of the earphone 10.

[0139] When the shape and size of the sound-producing portion 11 are consistent, if the distance between the center of mass H of the sound-producing portion 11 and the earhook extreme point N is too large, the sound-producing portion 11 will be positioned lower within the cavum concha, and the gap between the upper side US of the sound-producing portion 11 and the cavum concha will be too large, resulting in a poor listening experience. Furthermore, if the distance between the center of mass H of the sound-producing portion 11 and the earhook extreme point N is too large, excessive interference will occur between the sound-producing portion 11 (or the connection area between the earhook 12 and the sound-producing portion 11) and the tragus, causing the sound-producing portion 11 to excessively press against the tragus, affecting wearing comfort.

[0140] When the shape and size of the sound-producing portion 11 are consistent, if the distance between the center of mass H of the sound-producing portion 11 and the extreme point N of the ear hook is too small, the upper side US of the sound-producing portion 11 will fit closely with the upper edge of the cavum concha. The gaps between the upper side US and the cavum concha will be too small or too few, and the interior will be completely sealed from the external environment, making it impossible to form a cavity-like structure. Moreover, if the distance between the center of mass H of the sound-producing portion 11 and the extreme point N of the ear hook is too small, the sound-producing portion 11 (or the connection area between the ear hook 12 and the sound-producing portion) will excessively squeeze the outer contour of the ear, which will also affect wearing comfort.

[0141] In some embodiments, as Figure 7As shown, the projection point of the center of mass H of the sound-emitting part 11 onto the user's sagittal plane and the centroid of the projection of the sound-emitting part 11 onto the user's sagittal plane are point H', and point H' is located on the long axis of the projection of the sound-emitting part 11, that is, point H' is located on the x-axis. In some embodiments, to provide a better listening experience when the earphone 10 is worn, the distance between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 11 onto the user's sagittal plane can be 20mm-30mm. In some embodiments, to further improve the sound leakage reduction effect, the distance between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 11 onto the user's sagittal plane can be 22mm-26mm. In some embodiments, to ensure that the cavity-like structure formed by the sound-emitting part 11 and the cavum concha has a more appropriate volume and opening size / number, and to ensure that the clamping position of the sound-emitting part 11 is located at a more optimal position within the cavum concha, the distance between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 11 onto the user's sagittal plane can be 23mm-25mm.

[0142] In some embodiments, in addition to reflecting the distance between the center of mass H of the sound-emitting part 11 and the earhook extreme point N by the distance of the above-mentioned projection points, actual measurement can also be performed on the earhook 12. In some embodiments, on the earphone 10, in order to make the earphone 10 have a better listening effect when wearing, the distance between the center of mass H of the sound-emitting part 11 and the earhook extreme point N can be 20mm-30mm. In some embodiments, in order to further improve the sound leakage reduction effect, on the earphone 10, the distance between the center of mass H of the sound-emitting part 11 and the earhook extreme point N can be 24mm-26mm. In some embodiments, in order to make the cavity-like structure formed by the sound-emitting part 11 and the cavum concha have a more suitable volume and opening size / number, and to make the clamping position of the sound-emitting part 11 at a better position in the cavum concha, on the earphone 10, the distance between the center of mass H of the sound-emitting part 11 and the earhook extreme point N can be 24mm-26mm.

[0143] In some embodiments, the second angle between the line connecting the center of mass H of the sound-emitting portion 11 and the earhook extreme point N, and the long axis direction X of the sound-emitting portion 11, can affect the position at which the sound-emitting portion 11 extends into the cavum concha. When the second angle between the line connecting the center of mass H of the sound-emitting portion 11 and the earhook extreme point N, and the long axis direction X of the sound-emitting portion 11, is too large, the position of the sound-emitting portion 11 within the cavum concha is biased downward, and the gap between the upper side surface US of the sound-emitting portion 11 and the cavum concha is too large, resulting in a weak listening effect. When the second angle between the line connecting the center of mass H of the sound-emitting portion 11 and the earhook extreme point N, and the long axis direction X of the sound-emitting portion 11, is too small, the upper side surface US of the sound-emitting portion 11 fits against the upper edge of the cavum concha, and the gaps between the upper side surface US and the cavum concha are too small or too few, resulting in poor sound leakage reduction.

[0144] In some embodiments, the second angle α3 between the line N'H' between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 11 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 can be less than 90°, so that the projection point H' of the center of mass H of the sound-emitting part 11 is located on the rear side of the extreme point N' in the long axis direction X of the sound-emitting part 11, that is, the center of mass H of the sound-emitting part 11 is closer to the back of the user's head than the corresponding point N of the extreme point N' on the ear hook 12, so as to further enhance the stability of the aforementioned "clamping force lever". It should be noted that the second angle α3 between the line N'H' between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 11 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 refers to the angle between the line N'H' in the counterclockwise direction and the x-axis with the positive direction of the x-axis as the reference, as shown in FIG. Figure 7 shown.

[0145] In some embodiments, to achieve a better listening experience, the second angle α3 between the line N'H' connecting the extreme point N' and the projection point H' of the center of mass H of the sound-emitting portion 11 and the long axis X (i.e., the x-axis) of the projection of the sound-emitting portion 11 can be in the range of 65°-85°. In some embodiments, to further improve the sound leakage reduction effect, the second angle α3 between the line N'H' connecting the extreme point N' and the projection point H' of the center of mass H of the sound-emitting portion 11 and the long axis X (i.e., the x-axis) of the projection of the sound-emitting portion 11 can be in the range of 70°-80°. In some embodiments, in order to make the cavity-like structure formed by the sound-emitting part 11 and the cavum concha have a more suitable volume and opening size / number, and to make the clamping position of the sound-emitting part 11 located at a better position in the cavum concha, the second angle α3 between the line N'H' between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 11 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 can be in the range of 75°-79°.

[0146] In some embodiments, in addition to reflecting the second angle α3 between the line connecting the center of mass H of the sound-emitting portion 11 and the extreme point N of the earhook and the long axis X of the sound-emitting portion 11 through the position of the above-mentioned projection point, actual measurement can also be performed on the earhook 12. In some embodiments, to achieve a better listening experience, on the earphone 10, the second angle α3 between the line connecting the center of mass H of the sound-emitting portion 11 and the extreme point N of the earhook and the long axis X of the sound-emitting portion 11 can be in the range of 70°-85°. In some embodiments, to further improve the sound leakage reduction effect, on the earphone 10, the second angle α3 between the line connecting the center of mass H of the sound-emitting portion 11 and the extreme point N of the earhook and the long axis X of the sound-emitting portion 11 can be in the range of 75°-80°. In some embodiments, in order to make the cavity-like structure formed by the sound-emitting part 11 and the cavum concha have a more suitable volume and opening size / number, and to make the clamping position of the sound-emitting part 11 located at a better position in the cavum concha, on the earphone 10, the second angle α3 between the line between the center of mass H of the sound-emitting part 11 and the extreme point N of the earhook and the long axis direction X of the sound-emitting part 11 can be in the range of 77°-80°.

[0147] In some embodiments, on the user's sagittal plane, a first angle α2 between the line N'F' connecting the extreme point N' and the projection point F' of the center of mass F of the earphone 10 and the longitudinal axis X (i.e., the x-axis) of the projection of the sound-emitting portion 11 is smaller than a second angle α3 between the line N'H' connecting the extreme point N' and the projection point H' of the center of mass H of the sound-emitting portion 11 and the longitudinal axis X (i.e., the x-axis). In other words, the first angle α2 between the line N'F' and the x-axis is smaller than the second angle α3 between the line N'H' and the x-axis. This causes the center of mass F of the earphone 10 to be located behind the center of mass H of the sound-emitting portion 11 along the longitudinal axis X of the sound-emitting portion 11, i.e., the center of mass F of the earphone 10 is closer to the back of the user's head than the center of mass H of the sound-emitting portion 11. This arrangement allows the ear hook 12 to better clamp the ear of the user when the earphone 10 is worn, further enhancing the stability of the aforementioned "clamping force lever."

[0148] The position between the upper vertex K and the center of mass H of the sound-emitting part 11 reflects, to a certain extent, the relative position of the sound-emitting part 11 on the ear when the earphone 10 is worn. Specifically, when the distance between the center of mass H of the sound-emitting part 11 and the upper vertex K of the ear hook 12 is too large, when the user wears the earphone 10, the position of the sound-emitting part 11 may be closer to the opening of the user's ear canal, causing the sound-emitting part 11 to be positioned lower in the cavum concha, and the gap between the upper side surface US of the sound-emitting part 11 and the cavum concha is too large, resulting in a weak listening effect. When the distance between the center of mass H of the sound-emitting part 11 and the upper vertex K of the ear hook 12 is too small, the upper side surface US of the sound-emitting part 11 fits closely with the upper edge of the cavum concha, and the gap between the upper side surface US and the cavum concha is too small or too few, resulting in a poor sound leakage reduction effect, and the sound outlet on the sound-emitting part 11 is too far from the external auditory canal, which has an adverse effect on the listening effect.

[0149] like Figure 7 As shown, in some embodiments, in order to obtain a better listening effect, the distance between the projection point K' of the upper vertex K and the projection point H' of the center of mass H of the sound-emitting part 11 on the projection of the earphone 10 on the user's sagittal plane may be 18mm-28mm. In some embodiments, in order to further improve the sound leakage reduction effect, the distance between the projection point K' of the upper vertex K and the projection point H' of the center of mass H of the sound-emitting part 11 on the projection of the earphone 10 on the user's sagittal plane may be 20mm-26mm. In some embodiments, in order to make the cavity-like structure formed by the sound-emitting part 11 and the cavum concha have a more appropriate volume and opening size / number, the distance between the projection point K' of the upper vertex K and the projection point H' of the center of mass H of the sound-emitting part 11 on the projection of the earphone 10 on the user's sagittal plane may be 22mm-24mm.

[0150] In some embodiments, the angle between the line connecting the center of mass H of the sound-emitting portion 11 and the upper vertex K of the ear hook 12, and the longitudinal axis X of the sound-emitting portion 11, can affect the stability of the earphone 10 when worn. When the angle between the line connecting the center of mass H of the sound-emitting portion 11 and the upper vertex K of the ear hook 12, and the longitudinal axis X of the sound-emitting portion 11, is too large, the free end FE of the sound-emitting portion 11 can be far away from the side of the user's cavum concha, resulting in a weaker grip of the cavum concha by the sound-emitting portion 11 and an unstable wearing experience. When the angle between the line connecting the center of mass H of the sound-emitting portion 11 and the upper vertex K of the ear hook 12, and the longitudinal axis X of the sound-emitting portion 11, is too small, the free end FE of the sound-emitting portion 11 can fit too tightly against the user's cavum concha, affecting the wearing comfort of the earphone 10 and reducing the adjustability of the earphone 10.

[0151] In some embodiments, in order to make the earphone 10 have higher wearing stability and adjustability, on the projection of the earphone 10 on the user's sagittal plane, the angle α4 between the line K'H' between the projection point K' of the upper vertex K and the projection point H' of the center of mass H of the sound-emitting part 11 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 can be in the range of 45°-70°. It should be noted that the angle α4 between the line K'H' between the projection point K' of the upper vertex K and the projection point H' of the center of mass H of the sound-emitting part 11 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 refers to the angle between the line K'H' in the counterclockwise direction and the x-axis with the positive direction of the x-axis as the reference, as shown in FIG. Figure 7 As shown. In some embodiments, in order to further improve the wearing stability of the earphone 10, the angle α4 between the line K'H' connecting the projection point K' of the upper vertex K and the projection point H' of the center of mass H of the sound-emitting part 11 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 can be in the range of 50°-65°. In some embodiments, in order to further improve the adjustability of the earphone 10, the angle α4 between the line K'H' connecting the projection point K' of the upper vertex K and the projection point H' of the center of mass H of the sound-emitting part 11 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 11 can be in the range of 55°-60°.

[0152] In some embodiments, in addition to using the position of the projection point to reflect the angle α1 between the line connecting the center of mass H and the upper vertex K of the sound-emitting portion 11 and the longitudinal axis X of the sound-emitting portion 11, actual measurement can also be performed on the earhook 12. In some embodiments, to ensure greater wearing stability and adjustability of the earphone 10, the angle α1 between the line connecting the center of mass H of the sound-emitting portion 11 and the upper vertex K of the earhook 12 and the longitudinal axis X of the sound-emitting portion 11 can be 30°-55°. In some embodiments, to further enhance the wearing stability of the earphone 10, the angle α1 between the line connecting the center of mass H of the sound-emitting portion 11 and the upper vertex K of the earhook 12 and the longitudinal axis X of the sound-emitting portion 11 can be 40°-50°. In some embodiments, to further enhance the adjustability of the earphone 10, the angle α1 between the line connecting the center of mass H of the sound-emitting portion 11 and the upper vertex K of the earhook 12 and the longitudinal axis X of the sound-emitting portion 11 can be 45°-48°.

[0153] Figure 10 is a schematic diagram of a tangent segment of a first projection of an earphone according to some embodiments of this specification;

[0154] refer to Figure 10, together with the first projection, define a tangent segment 50 of the first closed curve, which is tangent to the first end contour at the first tangent point K0 and to the second end contour at the second tangent point K1. The lines connecting the first tangent point K0, the second tangent point K1, and the extreme point (such as point N') of the earhook's projection on the first plane can form a triangle. Since the positions of the first tangent point K0 and the second tangent point K1 are related to the first area of ​​the first closed curve, changes in the area of ​​the triangle formed by the lines connecting the first tangent point K0, the second tangent point K1, and the extreme point of the earhook's projection on the first plane will lead to changes in the first area, and will also lead to corresponding changes in the shape and size of the earhook 12. For example, an increase in the area of ​​the triangle corresponds to a decrease in the first area, and the size of the earhook 12 becomes smaller, which in turn affects the user's wearing experience.

[0155] In some embodiments, considering the wearing feeling of the user and the actual range of the first area of ​​the first closed curve, when the earphone 10 is not worn, the area of ​​the triangle formed by the first tangent point K0, the second tangent point K1 and the extreme point of the projection of the ear hook on the first plane is within 110mm. 2 -230mm 2 In some embodiments, the area of ​​the triangle formed by the first tangent point K0, the second tangent point K1 and the extreme point of the projection of the ear hook on the first plane is 150mm 2 -190mm 2 so that the first area of ​​the first closed curve is within 300 mm 2 -500mm 2 between.

[0156] refer to Figure 10In some embodiments, the first tangent point K0 and the second tangent point K1 are located close to the inner and outer sides of the cavum concha clamped by the sound-emitting part 11 and the ear hook. When the user wears the earphone 10, the line between the first tangent point K0 and the second tangent point K1, that is, the size of the tangent segment 50, is related to the size of the cavum concha. Therefore, the upper vertex and the first tangent point K0 and the second tangent point K1 can determine the force applied to the cavum concha when the user wears the earphone 10, which is related to the user's wearing experience. In some embodiments, the length of the tangent segment 50 is between 11 mm and 25 mm, the distance between the second tangent point K1 and the extreme point of the ear hook's projection on the first plane is between 31 mm and 58 mm, and the distance between the first tangent point K0 and the extreme point of the ear hook's projection on the first plane is between 18 mm and 41 mm. If a line segment in the triangle is too long, it will result in an inability to properly clamp the concha cavity, poor wearing stability, and easy to fall off; and the sound-emitting part 11 and the ear hook provide a force close to each other under the drive of elastic force. If a line segment in the triangle is too short, it will cause discomfort in the concha cavity or the auricle close to the side of the head when worn, affecting the wearing experience of the earphone 10. In some embodiments, the length of the tangent segment 50 is between 14mm and 22mm. In some embodiments, when the earphone 10 is not worn, the distance between the second tangent point K1 and the extreme point of the projection of the ear hook on the first plane is between 35mm and 55mm. In some embodiments, when the earphone 10 is not worn, the distance between the first tangent point K0 and the extreme point of the projection of the ear hook on the first plane is between 22mm and 38mm. Furthermore, changes in the length of any line segment of the triangle formed by the upper vertex, the first tangent point K0, and the second tangent point K1 will cause changes in the angle of the triangle's interior angle. For the same reasons as above, in some embodiments, the angle formed by the first tangent point K0, the second tangent point K1, and the extreme point of the earhook's projection on the first plane is between 17°-37° at the second tangent point K1, between 110°-155° at the first tangent point K0, and between 9°-24° at the extreme point of the earhook's projection on the first plane. To further enhance the user's wearing experience and wearing stability, in some embodiments, the angle formed by the second tangent point K1 is between 20°-35°, the angle formed by the first tangent point K0 is between 120°-150°, and the angle formed by the extreme point of the earhook's projection on the first plane is between 10°-22°.

[0157] Figure 11 This is a schematic diagram of a triangle formed by the center of mass of the ear hook, battery compartment and sound-emitting part of the earphone shown in some embodiments of this specification.

[0158] refer to Figure 11, the three vertices of the triangle 1100 in the figure correspond to the center of mass 1110 of the ear hook, the center of mass 1120 of the sound-emitting part, and the center of mass 1130 of the battery compartment of the earphone 10. The triangle 1100 formed by the above three centers of mass affects the stability and comfort of the earphone 10 when worn. Among them, the center of mass position of the ear hook is related to the shape of the ear hook. In addition, the distribution of the three centers of mass will also affect the center of mass position of the earphone 10. If a line segment in the triangle 1100 is too long, it will cause the stability of the earphone 10 when worn. For example, if the distance between the center of mass 1130 of the battery compartment and the center of mass 1110 of the ear hook is too short, it may cause the earphone 10 to tilt toward the position of the sound-emitting part 11 when worn. As the wearing time increases or the user moves when wearing the earphone 10, the sound-emitting part 11 may tilt to a certain extent or even fall off, affecting the user's wearing experience. If the distance between the center of mass 1130 of the battery compartment and the center of mass 1110 of the ear hook is too long, the earphone 10 will tend to tilt toward the battery compartment 13 when worn. As the wearing time increases or the user moves while wearing the earphone 10, the sound-emitting part 11 will also tilt to a certain extent or even fall off, affecting the user's wearing experience. Considering the wearing stability, in some embodiments, when the earphone 10 is not worn, the relative distance between the center of mass 1120 of the sound-emitting part and the center of mass 11 of the ear hook is between 15mm-40mm; when the earphone 10 is not worn, the relative distance between the center of mass 1130 of the battery compartment and the center of mass 11 of the ear hook is between 40mm-62mm; and the relative distance between the center of mass 1120 of the sound-emitting part and the center of mass 1130 of the battery compartment is between 11mm-35mm. In some embodiments, in order to further improve the comfort of the user wearing the earphones 10, when the earphones 10 are not worn, the relative distance between the center of mass 1120 of the sound-emitting part and the center of mass 11 of the ear hook is between 20mm-35mm; when the earphones 10 are not worn, the relative distance between the center of mass 1130 of the battery compartment and the center of mass 11 of the ear hook is between 35mm-55mm; the relative distance between the center of mass 1120 of the sound-emitting part and the center of mass 1130 of the battery compartment is between 15mm-30mm.

[0159] In some embodiments, changes in the length of any line segment (the distance between the two centroids) within the triangle 1100 formed by the centroid 11 of the earhook, the centroid 1120 of the sound-emitting portion, and the centroid 1130 of the battery compartment can cause changes in the internal angle of the triangle 1100, thereby affecting the actual wearing experience of the earphone 10. For example, if the angle formed at the centroid 1120 of the sound-emitting portion in the triangle 1000 is too large or too small, it may cause the lever structure formed by the sound-emitting portion 11 and the earhook to change, affecting the user's wearing experience. For similar reasons as described above, in some embodiments, when the earphone 10 is not worn, the angle formed at the centroid 1130 of the battery compartment is between 12° and 22°; the angle formed at the centroid of the sound-emitting portion is between 111° and 164°; and the angle formed at the centroid 11 of the earhook is between 11° and 24°. In some embodiments, in triangle 1100, the angle formed at the center of mass 1130 of the battery compartment is between 15°-25°; the angle formed at the center of mass of the sound-emitting part is between 130°-160°; and the angle formed at the center of mass 11 of the ear hook is between 12°-22°.

[0160] In some embodiments, as described above, the sound-emitting portion can be worn in a manner other than extending into the concha cavity. Figure 12 Taking the earphone 1200 shown in FIG. 1 as an example, the earphone 1200 is described in detail. It should be noted that, without violating the corresponding acoustic principles, Figure 12 The structure of the earphone 1200 and its corresponding parameters can also be applied to the earphone mentioned above that can extend the sound-producing part into the concha cavity.

[0161] Figure 12 This is an exemplary wearing diagram of headphones according to some other embodiments of this specification.

[0162] like Figure 12As shown, by locating the sound-emitting portion 1201 at least partially at the user's antihelix 105, the output effect of the earphone 1200 can be improved, that is, the sound intensity at the near-field listening position is increased, while the volume of far-field sound leakage is reduced. When the user wears the earphone 1200, one or more sound outlet holes can be provided on the side of the shell of the sound-emitting portion 1201 close to or facing the user's ear canal, and one or more pressure relief holes are provided on the other side of the shell of the sound-emitting portion 1201 (for example, the side away from or away from the user's ear canal). The sound outlet holes are acoustically coupled with the front cavity of the earphone 1200, and the pressure relief holes are acoustically coupled with the back cavity of the earphone 1200. Taking the example of the sound-emitting portion 1201 including a sound outlet hole and a pressure relief hole, the sound output by the sound outlet hole and the sound output by the pressure relief hole can be approximately regarded as two sound sources, and the sounds of the two sound sources are equal in magnitude and opposite in phase. The sound from the sound hole can be directly transmitted to the user's ear canal without hindrance, while the sound from the pressure relief hole needs to bypass the shell of the sound-emitting part 1201 or pass through the sound-emitting part 1201 to form a similar Figure 13 The acoustic model shown in Figure 13 As shown in the figure, when a baffle is provided between point sound source A1 and point sound source A2, in the near field, the sound field of point sound source A2 needs to bypass the baffle to interfere with the sound wave of point sound source A1 at the listening position, which is equivalent to increasing the sound path from point sound source A2 to the listening position. Therefore, assuming that point sound source A1 and point sound source A2 have the same amplitude, the amplitude difference between the sound waves of point sound source A1 and point sound source A2 at the listening position increases compared to the case where no baffle is provided, thereby reducing the degree of cancellation of the two sounds at the listening position, thereby increasing the volume at the listening position. In the far field, since the sound waves generated by point sound source A1 and point sound source A2 do not need to bypass the baffle to interfere in a larger spatial range (similar to the case without a baffle), the sound leakage in the far field will not increase significantly compared to the case where there is no baffle. Therefore, by providing a baffle structure around one of the point sound sources A1 and A2, the volume at the near-field listening position can be significantly increased without significantly increasing the volume of far-field sound leakage.

[0163] Figure 13 It is a schematic diagram of the acoustic model formed by the earphones shown in some other embodiments of this specification.

[0164] Take the sound-emitting portion 1201 including a sound-emitting hole and a pressure-relieving hole as an example. Figure 13 As shown, the sound output from the sound outlet and the sound output from the pressure relief hole can be approximately regarded as two sound sources, namely point sound source A1 and point sound source A2, with the sound of the two sound sources being equal in magnitude and opposite in phase. The sound from the sound outlet can be directly transmitted to the user's ear canal without hindrance, while the sound from the pressure relief hole needs to bypass the shell of the sound emitting part 1201 or pass through the sound emitting part 1201 to form a similar Figure 13The acoustic model shown. When a baffle is provided between point sound source A1 and point sound source A2, in the near field, the sound field of point sound source A2 needs to bypass the baffle in order to interfere with the sound wave of point sound source A1 at the listening position, which is equivalent to increasing the sound path from point sound source A2 to the listening position. Therefore, assuming that point sound source A1 and point sound source A2 have the same amplitude, the amplitude difference between the sound waves of point sound source A1 and point sound source A2 at the listening position increases compared to the case where no baffle is provided, thereby reducing the degree of cancellation of the two sounds at the listening position, and increasing the volume at the listening position. In the far field, since the sound waves generated by point sound source A1 and point sound source A2 do not need to bypass the baffle in a larger spatial range to interfere (similar to the case without a baffle), the sound leakage in the far field will not increase significantly compared to the case where there is no baffle. Therefore, by providing a baffle structure around one of the point sound sources A1 and A2, the volume at the near-field listening position can be significantly increased without significantly increasing the volume of far-field sound leakage.

[0165] Figure 14 This is a projection diagram of the earphone on the first plane in the non-worn state according to some embodiments of this specification.

[0166] like Figure 14 As shown, the ear hook 1202 and the sound-emitting portion 1201 form a second projection on the first plane, and the second projection includes an outer contour, a first end contour, an inner contour, and a second end contour. Figure 3 The structure of the middle earphone 10 is similar. The first end contour in the second projection can be the projection contour of the free end FE of the sound-emitting part 1201 on the first plane, and the two endpoints P0 and P1 of the first end contour are the projection points of the intersection of the free end FE and the other parts of the sound-emitting part 1201 on the first plane. The second end contour can be the projection contour of the end BE of the ear hook 1202 on the first plane, and the two endpoints Q0 and Q1 of the second end contour are the projection points of the intersection of the end BE and the other parts of the ear hook 1202 on the first plane. The outer contour can be the contour of the first projection between point P1 and point Q1. The inner contour can be the contour of the second projection between point P0 and point Q0. For the division of the free end FE and the end BE of the ear hook 1202, please refer to the relevant description of the earphone 10 (such as this manual Figure 3 and Figure 5 Related description).

[0167] Taking the example of a rectangular projection (e.g., a runway shape) of the sound-emitting portion 1201 on the first plane, the projection of the sound-emitting portion 1201 includes parallel or nearly parallel upper and lower side projections, as well as a first end contour connecting the upper and lower side projections. The first end contour can be a straight line segment or a circular arc, with points P0 and P1 representing the two ends of the first end contour, respectively. As an example only, point P0 can be the intersection of the arc formed by the projection of the free end of the sound-emitting portion 1201 and the line segment of the upper side projection. Similar to point P0, point P1 can be the intersection of the arc formed by the projection of the free end of the sound-emitting portion 1201 and the line segment of the lower side projection. Similarly, the ear hook 1202 also has a free end at the end away from the sound-emitting portion 1201. The projection of the free end of the ear hook 1202 on the first plane 60 forms a second end contour, which can be a straight line segment or a circular arc. Points Q0 and Q1 represent the two ends of the second end contour, respectively. In some embodiments, point Q0 and point Q1 can be the two end points of a line segment or arc projected from the free end of the first part of the ear hook 1202 in the direction away from the second part of the ear hook on the first plane 60. Furthermore, in the long axis direction Y of the sound-emitting part 11, the endpoint close to the sound-emitting part 11 is point Q0, and the endpoint away from the sound-emitting part 11 is Q1.

[0168] like Figure 14 As shown, the projection shape of the earphone 1200 in the first plane and the sagittal plane of the human body can reflect the wearing method of the earphone 1200 on the ear. For example, the area of ​​the second projection can reflect the area of ​​the auricle that the earphone 1200 can cover in the non-wearing state / wearing state, as well as the contact method between the sound-emitting portion 1201 and the ear hook 1202 and the ear. In some embodiments, since the sound-emitting portion 1201 does not contact the first part of the ear hook 1202, the inner contour, outer contour, first end contour, and second end contour in the second projection form a non-closed area. The size of this area is closely related to the wearing effect of the earphone 1200 (for example, wearing stability, sound emission position, etc.). For ease of understanding, in some embodiments, a tangent segment 1250 connecting the first end contour and the second end contour can be determined, and the area enclosed by the second closed curve defined by the tangent segment 1250, the outer contour, the first end contour, and the second end contour is used as the area of ​​the second projection (also referred to as the "second area").

[0169] In some embodiments, the headset 1200 and Figure 5 The differences of the earphone 10 shown include: the sound-emitting portion 1201 of the earphone 1200 is located at the user's antihelix 105 when worn, so the second area is smaller than the first area. In some embodiments, when not worn, the second area can be 0.2 to 0.6 times the first area. In some embodiments, the second area can be 0.3 to 0.5 times the first area. The second area of ​​the second closed curve can be within 50 mm.2 -200mm 2 In order to ensure the sound efficiency of the sound-emitting part 1201 and the moderate clamping force, and avoid the foreign body sensation when wearing the earphone 1200, the second area of ​​the second closed curve is within the range of 80mm 2 -150mm 2 between.

[0170] When the range of the second area of ​​the second closed curve is set to 50mm 2 -200mm 2 When the ear hook 1202 is in the ear, the shape and size of the ear hook 1202 itself need to be further set. On the one hand, the ear hook 1202 can adapt to the user's ear and improve the wearing stability and adjustability of the earphone 10. On the other hand, the sound-emitting part 1201 connected to the ear hook 1202 is located at the antihelix to avoid the sound-emitting part 1201 blocking the ear canal, thereby avoiding affecting the user's acquisition of the sound in the external environment, so that the user has a better acoustic experience. Figure 14 The first curve involved illustrates the shape and size of the ear hook 1202 .

[0171] In some embodiments, as Figure 14 As shown, the first curve L2 in the projection of the ear hook 1202 on the user's sagittal plane can be used as a reference curve for the ear hook 1202. In some embodiments, since the area where the ear hook 1202 contacts the user's ear when the earphone 10 is worn is mainly the inner contour of the ear hook 1202, the first curve L2 can be a reference curve corresponding to the inner contour of the projection of the ear hook 1202 on the user's sagittal plane. In some embodiments, in the long axis direction X of the projection of the sound-emitting portion 1201, the curve corresponding to the inner contour of the projection of the ear hook 1202 on the user's sagittal plane has a leftmost end (point P') and a rightmost end (point Q'). The portion of the curve of the inner contour of the projection of the ear hook 1202 on the user's sagittal plane between point P' and point Q' is the first curve L2. By designing the characteristics of the first curve L2 (such as extreme points, etc.), the shape and size of the ear hook 1202 can be determined, thereby improving the compatibility of the ear hook 1202 with the user's ear and improving the wearing stability and adjustability of the earphone 10. On the other hand, the ear hook 1202 can be adjusted to fix the sound-emitting part 1201 to the specific position of the user's ear, thereby improving the listening effect of the earphone 10.

[0172] When the range of the second area of ​​the second closed curve is set to 50mm 2 -200mm 2After that, it is necessary to limit the size of the second closed curve in the long axis direction of the projection of the sound-emitting part 1201. If the size of the second closed curve in the long axis direction of the projection of the sound-emitting part 11 is too small, the connection end of the ear hook 1202 and the sound-emitting part and its end BE will clamp the user's auricle too tightly; if the size of the second closed curve in the long axis direction of the projection of the sound-emitting part 11 is too large, the distance between the sound-emitting part 11 and the top vertex of the ear hook will be too small, affecting the fit between the sound-emitting part 1201 and the antihelix, thereby causing discomfort when wearing. In some embodiments, the size of the second closed curve in the long axis direction of the projection of the sound-emitting part 1201 can be represented by the distance between the leftmost end (point P') and the rightmost end (point Q') of the first curve L2 in the long axis direction of the projection of the sound-emitting part 1201. In some embodiments, in the long axis direction of the projection of the sound-emitting part 1201, the distance between the leftmost end (point P') and the rightmost end (point Q') of the first curve L2 ranges from 25mm to 35mm. In some embodiments, to ensure better wearing stability of the earphone 10, the distance between the leftmost end (point P') and the rightmost end (point Q') of the first curve L2 along the long axis of the projection of the sound-emitting portion 1201 ranges from 28 mm to 33 mm. In some embodiments, the distance between the leftmost end (point P') and the rightmost end (point Q') of the first curve L2 along the long axis of the projection of the sound-emitting portion 1201 ranges from 30 mm to 32 mm.

[0173] Please refer to Figure 14 In some embodiments, a second rectangular coordinate system xoy can be established with the long axis X of the projection of the sound-emitting part 1201 on the sagittal plane as the x-axis, the short axis Y as the y-axis, and the intersection of the x-axis and the y-axis as the origin o. The first curve L2 can be regarded as a curve in the second rectangular coordinate system xoy.

[0174] In some embodiments, the y-axis direction can be referred to as the first direction, that is, the first direction is perpendicular to the long axis direction X of the projection of the sound-emitting portion 1201 on the user's sagittal plane and is directed toward the top of the user's head. In some embodiments, in the second rectangular coordinate system xoy, the first curve L2 has an extreme point N' in the first direction. By setting the positional relationship between the extreme point N' and other position points on the ear hook 1202 and the sound-emitting portion 1201, the wearing condition of the earphone 10 (for example, the mechanical parameters when worn and the position of the sound-emitting portion 1201 relative to the ear when worn) can be adjusted. Please refer to Figure 3 and Figure 14In some embodiments, the extreme point N' is located in front of or behind the vertex K on the ear hook 1202 (represented by the projection point K' of the vertex on the user's sagittal plane), or the extreme point N' coincides with the projection point K' of the vertex K on the ear hook. In other words, in the projection of the ear hook 1202 on the user's sagittal plane, the extreme point N' is located farther away from the back of the user's head, closer to the back of the user's head, or the positions of the extreme point N' and the extreme point N' coincide.

[0175] In some embodiments, the upper vertex of the ear hook 1202 may be the highest point of the inner contour of the ear hook 1202 along the vertical axis of the user in the wearing state. In some embodiments, when the user wears the earphone 10, the ear portion 100 may mainly support the earphone 1200 through the upper vertex of the ear hook 1202. In some embodiments, the upper vertex of the ear hook 1202 may be the position where the inner contour of the ear hook 1202 is most curved in the wearing state. In some embodiments, the upper vertex of the ear hook 1202 may be the point on the inner contour of the ear hook 1202 that is farthest from the end of the ear hook 1202 (i.e., the end of the first part 121, the end of the ear hook 1202 that is not connected to the sound-emitting part 1201) in the wearing state. In some embodiments, the position of the upper vertex of the ear hook 1202 may simultaneously meet one or more of the above three positions.

[0176] like Figure 12 As shown, when the earphone 1200 is worn, the sound-emitting part 1201 needs to be located at the antihelix, and the distance between the extreme point of the ear hook and the upper vertex in the long axis direction X of the sound-emitting part 1201 can affect the position of the sound-emitting part 1201 relative to the antihelix and the direction of the sound-emitting part 1201.

[0177] When the distance between the extreme point and the upper vertex of the ear hook in the long axis direction X of the sound-emitting part 1201 is too large, the fit between the first part 121 of the ear hook 1202 and the ear 100 will deteriorate, thereby reducing the wearing stability of the earphone 1200. Alternatively, the orientation of the sound-emitting part 1201 at the antihelix 102 (for example, the long axis direction X) will be too close to the vertical axis, making the contact friction between the sound-emitting part 1201 and the antihelix too small, thereby making the sound-emitting part 1201 unstable to wear and easy to slide toward the ear canal.

[0178] To ensure that the sound-emitting portion 1201 is located at the antihelix while preventing the free end FE of the sound-emitting portion 1201 from extending beyond the user's auricle 100, thereby affecting the fit between the sound-emitting portion 1201 and the auricle and causing discomfort, in some embodiments, the distance between the extreme point N' and the projection point K' of the upper vertex along the long axis X of the sound-emitting portion 1201 on the projection of the ear hook 1202 on the user's sagittal plane may be no greater than 5 mm, that is, the distance between the extreme point N' and the projection point K' of the upper vertex may be 0 mm to 5 mm. In some embodiments, the distance between the extreme point N' and the projection point K' of the upper vertex of the ear hook 1202 along the long axis X of the projection of the sound-emitting portion 1201 on the projection of the ear hook 1202 on the user's sagittal plane may be 0 mm to 3 mm. In some embodiments, in the projection of the ear hook 1202 on the user's sagittal plane, along the long axis X of the projection of the sound-producing portion 1201, the distance between the extreme point N' and the projection point K' of the upper vertex of the ear hook 1202 can be 0 mm to 2 mm. It should be noted that the distance between the extreme point N' and the projection point K' of the upper vertex does not restrict their orientation; the extreme point N' can be located anterior to or posterior to the projection point K' of the upper vertex. When the distance between the extreme point N' and the projection point K' of the upper vertex is 0 mm, it indicates that the extreme point N' and the projection point K' of the upper vertex coincide with each other.

[0179] It should be noted that the method for measuring the relevant distances and angles on the projection of the earphone 1200 on the user's sagittal plane can be: for the earphone 1200, take a photo parallel to the projection plane (the user's sagittal plane), measure the relevant distances and angles on the photo, and then convert them according to the scale of the photo to obtain the actual data of the relevant distances and angles on the projection plane.

[0180] After defining the shape and size of the ear hook 1202, in order to ensure that the sound-emitting portion 1201 can be located at the anti-helix and to ensure the wearing stability of the sound-emitting portion 1201, it is necessary to further define the wearing angle of the sound-emitting portion 1201 relative to the auricle and the anti-helix. In some embodiments, in order to make the entire or partial area of ​​the sound-emitting portion 1201 located in the anti-helix, such as Figure 14 As shown, the long axis direction X of the projection of the sound-emitting part 1201 is parallel to the horizontal direction (i.e. Figure 14 In some embodiments, the angle of inclination between the long axis X of the projection of the sound-emitting part 1201 and the horizontal direction may be in the range of 0°-10°. In some embodiments, the angle of inclination between the long axis X of the projection of the sound-emitting part 1201 and the horizontal direction may be in the range of 0°-5°.

[0181] When the range of the second area of ​​the second closed curve is set to 50mm 2 -200mm 2After that, it is necessary to define the distance of the second closed curve in the short axis direction (i.e., the first direction) of the projection of the sound-emitting portion 1201. The distance of the second closed curve in the first direction of the projection of the sound-emitting portion 1201 affects the position of the sound-emitting portion 1201 and the anti-helix. If the distance is too small, the free end FE of the sound-emitting portion 1201 will extend out of the user's auricle 100. If the distance is too large, the sound-emitting portion 1201 will block the ear canal, resulting in insufficient ear canal patency. In some embodiments, when not worn, the distance of the second closed curve in the first direction of the projection of the sound-emitting portion 1201 can be represented by the distance between the extreme point N' in the first direction and the leftmost end (point P') of the first curve L1. In some embodiments, to ensure that the sound-emitting portion 1201 can be located at the anti-helix, the distance between the extreme point N' and the leftmost end (point P') of the first curve L2 in the first direction ranges from 15 mm to 20 mm. In some embodiments, the distance between the extreme point N' and the leftmost end (point P') of the first curve L2 ranges from 15 mm to 18 mm. In some embodiments, the distance between the extreme point N′ and the leftmost end (point P′) of the first curve L2 ranges from 16 mm to 28 mm.

[0182] Similarly, in some embodiments, the distance of the second closed curve in the first direction of the projection of the sound-emitting portion 1201 can be represented by the distance between the projection point K' of the upper vertex in the first direction and the leftmost end (point P') of the first curve L2. In some embodiments, to ensure that the sound-emitting portion 1201 can be located within the antihelix, the distance between the projection point K' of the upper vertex and the leftmost end (point P') of the first curve L2 in the first direction ranges from 12 mm to 17 mm. In some embodiments, in the first direction, the distance between the projection point K' of the upper vertex and the leftmost end (point P') of the first curve L2 ranges from 13 mm to 16 mm. In some embodiments, in the first direction, the distance between the projection point K' of the upper vertex and the leftmost end (point P') of the first curve L2 ranges from 14 mm to 15 mm.

[0183] In some embodiments, as Figure 12 As shown, the center of mass of the earphone 1210 is point F. In some embodiments, due to the internal structure of the sound-producing portion 1201 (such as the magnetic circuit, circuit board, etc.), the mass of the sound-producing portion 1201 in the earphone 1210 is relatively large. Therefore, the position of the center of mass F of the earphone 1210 is close to the position H of the center of mass of the sound-producing portion 1201, or is significantly affected by the mass of the sound-producing portion 1201. In other words, the position of the center of mass F of the earphone 1210 can, to a certain extent, represent the position of the sound-producing portion 1201. For ease of explanation, the specific position of the center of mass F of the earphone 1210 is described in detail below based on the relative positions of the center of mass F of the earphone 1210 and the sound-producing portion 1201.

[0184] Please refer to Figure 8AIn some embodiments, the distance between the center of mass F of the earphone 1210 and the upper side surface (the side closest to the head) of the sound-emitting portion 1201 on the XY plane can be 2 mm to 5 mm. In some embodiments, the distance between the center of mass F of the earphone 1210 and the upper side surface of the sound-emitting portion 1201 on the XY plane can be 2.5 mm to 4.5 mm. In some embodiments, the distance between the center of mass F of the earphone 1210 and the upper side surface of the sound-emitting portion 1201 on the XY plane can be 3 mm to 4 mm.

[0185] In some embodiments, the distance between the center of mass F of the earphone 1210 and the long axis (i.e., the x-axis) of the sound-emitting portion 1201 on the XY plane can be 1 mm to 2 mm. In some embodiments, the distance between the center of mass F of the earphone 1210 and the long axis (i.e., the x-axis) of the sound-emitting portion 1201 on the XY plane can be 1.2 mm to 1.8 mm. In some embodiments, the distance between the center of mass F of the earphone 1210 and the long axis (i.e., the x-axis) of the sound-emitting portion 1201 on the XY plane can be 1.3 mm to 1.5 mm.

[0186] In some embodiments, the distance between the center of mass F of the earphone 1210 and the free end FE of the sound-emitting portion 1201 on the XY plane can be 4 mm to 8 mm. In some embodiments, the distance between the center of mass F of the earphone 1210 and the free end FE (i.e., the rear side RS) of the sound-emitting portion 1201 on the XY plane can be 6 mm to 8 mm. In some embodiments, the distance between the center of mass F of the earphone 1210 and the free end FE (i.e., the rear side RS) of the sound-emitting portion 1201 on the XY plane can be 6.5 mm to 7 mm.

[0187] In some embodiments, the distance between the center of mass F of the earphone 1210 and the inner side surface of the sound-emitting portion 1201 (the side closest to the auricle) on the XZ plane can be 3 mm to 8 mm. In some embodiments, the distance between the center of mass F of the earphone 1210 and the inner side surface of the sound-emitting portion 1201 on the XZ plane can be 4 mm to 6 mm. In some embodiments, the distance between the center of mass F of the earphone 1210 and the inner side surface of the sound-emitting portion 1201 on the XZ plane can be 4.5 mm to 5 mm.

[0188] In some embodiments, the wearing stability and adjustability of the earphone 1210 can be improved by designing the position of the center of mass F, the upper vertex, and the extreme point of the earhook. In some embodiments, since the ear 100 mainly supports the earphone 1210 through the upper vertex of the earhook 12, when the user wears the earphone 1210, it can be regarded as forming a "support lever" with the upper vertex K as the support point. When worn, the center of mass F of the earphone 1210 is located behind the upper vertex (i.e., on the side close to the back of the user's head), which can prevent the earphone 1210 from having a tendency to flip forward (i.e., away from the back of the user's head) when worn, thereby improving the wearing stability of the earphone 1210. In some embodiments, the earhook extreme point can be the location on the earhook 12 with the smallest cross-section, making it easier for the earhook 12 to deform at the earhook extreme point N. Consequently, when a user wears the earphone 1210, the first portion 121 of the earhook 12 and the sound-emitting portion 1201 form a structure similar to a "clamping lever" with the earhook extreme point N as a fulcrum, clamping the earphone 1210 on both sides of the user's ear (e.g., the front and back sides of the antihelix). To improve the stability of the "support lever" and "clamping lever," the center of mass F and the upper vertex K of the earphone 1210 are located on either side of the earhook extreme point N, respectively. The positions of the center of mass F, the upper vertex K, and the earhook extreme point N are further described below. The first portion of the earhook 1202 and the sound-emitting portion 1201 form a structure similar to a "clamping lever" with the earhook extreme point as a fulcrum, clamping the earphone 1210 on both sides of the user's ear (e.g., the front and back sides of the cavum concha). To improve the stability of the "support lever" and "clamping force lever," the center of mass F and the upper vertex of the earhook 1202 are located on either side of the earhook extreme point. The positions of the center of mass F, the upper vertex, and the earhook extreme point are described in detail below.

[0189] refer to Figure 14 In some embodiments, the projection point of the center of mass F of the earphone 1210 on the sagittal plane of the user is point F'. In some embodiments, when the earphone 1210 is not worn, the distance between the projection point F' of the center of mass F of the earphone 1210 and the extreme point of the earhook is also related to the stability when worn and the foreign body sensation at the connection point between the user's ear and head. In some embodiments, when the distance between the projection point F' of the center of mass F of the earphone 1210 and the extreme point of the earhook is too large, the clamping position of the earphone 1210 on the ear may be too low, and the sound-emitting part 1201 may block the ear canal when worn, resulting in poor ear canal patency. When the distance between the projection point F' of the center of mass F of the earphone 1210 and the extreme point of the earhook is too small, it means that the force arms at both ends of the fulcrum of the aforementioned "clamping force lever" may be too small. When the clamping force remains unchanged, the lever structure will be less stable, and the earphone 1210 may be unstable when worn.

[0190] In some embodiments, in order to ensure that the headset 1210 has higher wearing stability when worn, the distance between the extreme point N' and the projection point F' of the center of mass F of the headset 1210 on the projection of the headset 1210 on the user's sagittal plane may be 15mm-30mm. In some embodiments, in order to further improve the wearing stability of the headset 1210, the distance between the extreme point N' and the projection point F' of the center of mass F of the headset 1210 on the projection of the headset 1210 on the user's sagittal plane may be 18mm-28mm. In some embodiments, the distance between the extreme point N' and the projection point F' of the center of mass F of the headset 1210 on the projection of the headset 1210 on the user's sagittal plane may be 20mm-24mm.

[0191] In some embodiments, the size of the third angle b1 between the line connecting the center of mass F of the earphone 1210 and the extreme point of the earhook and the long axis direction X of the sound-emitting part 1201 determines to a certain extent the shape of the inner contour of the earphone 1210, and the shape of the inner contour is related to the user's wearing feeling. Specifically, in order to ensure that the earhook fits the user's ear or head when the user wears the earphone 1210, an angle that is too large or too small may cause the shape to change when worn. Specifically, when the third angle b1 between the line connecting the center of mass F of the earphone 1210 and the extreme point of the earhook and the long axis direction X of the sound-emitting part 1201 is too large, the clamping position of the sound-emitting part 1201 is too low relative to the antihelix. When the third angle b1 between the line connecting the center of mass F of the earphone 1210 and the extreme point of the earhook and the long axis direction X of the sound-producing part 1201 is too small, the clamping position of the sound-producing part 1201 is too high relative to the antihelix, and the free end FE of the sound-producing part 1201 may extend out of the edge of the auricle.

[0192] In some embodiments, as Figure 14 As shown, on the projection of the earphone 1210 on the user's sagittal plane, the third angle b1 between the line N'F' connecting the extreme point N' and the projection point F' of the earphone's center of mass, and the long axis X (i.e., the x-axis) of the projection of the sound-producing portion 1201 can be less than 90°. This allows the projection point F' of the earphone's center of mass F to be located behind the extreme point N' along the long axis X of the sound-producing portion 1201. Because the center of mass F of the earphone 1210 is primarily influenced by the mass of the sound-producing portion 1201, the position of the center of mass F also reflects, to a certain extent, the position at which the sound-producing portion 1201 grips the cavum concha. Specifically, the position at which the sound-producing portion 1201 grips the cavum concha is closer to the back of the user's head than the earhook's extreme point N, further enhancing the stability of the aforementioned "clamping force lever." It should be noted that the third angle b1 between the line N'F' connecting the extreme point N' and the projection point F' of the center of mass of the earphone 1210 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 refers to the angle between the line N'F' and the x-axis in the counterclockwise direction with the positive direction of the x-axis as the reference, as shown in FIG. Figure 14 In some embodiments, to prevent the sound-emitting portion 1201 from being clamped too far below or too far above the antihelix, the third angle b1 between the line N'F' connecting the extreme point N' and the projection point F' of the center of mass F of the earphone 1210 and the long axis X (i.e., the x-axis) of the projection of the sound-emitting portion 1201 can be in the range of 50°-87°. In some embodiments, the third angle b1 between the line N'F' connecting the extreme point N' and the projection point F' of the center of mass F of the earphone 1210 and the long axis X (i.e., the x-axis) of the projection of the sound-emitting portion 1201 can be in the range of 55°-80°. In some embodiments, in order to make the clamping position of the sound-emitting part 1201 located at a better position inside the antihelix, the third angle b1 between the line N'F' between the extreme point N' and the projection point F' of the center of mass F of the earphone 1210 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 can be in the range of 60°-75°.

[0193] Because the position of the earphone 1210's center of mass F is significantly affected by the position of the sound-emitting portion 1201, if the overall volume of the earhook 12 does not change significantly, the position between the upper vertex and the earphone 1210's center of mass F to a certain extent reflects the relative position of the sound-emitting portion 1201 within the ear when the earphone 1210 is worn. Specifically, when the distance between the earphone 1210's center of mass F and the upper vertex of the earhook 12 is too large, the sound-emitting portion 1201 may be positioned closer to the user's ear canal opening when the user wears the earphone 1210, causing the sound-emitting portion 1201 to be positioned lower within the antihelix and thus obstructing the ear canal. When the distance between the earphone 1210's center of mass F and the upper vertex of the earhook 12 is too small, the free end FE of the sound-emitting portion 1201 may extend beyond the edge of the auricle.

[0194] like Figure 14 As shown, in some embodiments, in the projection of the earphone 1210 on the user's sagittal plane, the distance between the projection point K' of the upper vertex and the projection point F' of the center of mass F of the earphone 1210 may be 17 mm to 30 mm. In some embodiments, the distance between the projection point K' of the upper vertex and the projection point F' of the center of mass F of the earphone 1210 may be 20 mm to 28 mm. In some embodiments, the distance between the projection point K' of the upper vertex and the projection point F' of the center of mass F of the earphone 1210 may be 22 mm to 25 mm.

[0195] In some embodiments, the angle between the line connecting the center of mass F of the earphone 1210 and the upper vertex of the earhook 12, and the longitudinal axis X of the sound-emitting portion 1201, can affect the stability of the earphone 1210 when worn. If the angle between the line connecting the center of mass F of the earphone 1210 and the upper vertex of the earhook 12, and the longitudinal axis X of the sound-emitting portion 1201, is too large, the free end FE of the sound-emitting portion 1201 is too far from the edge of the helix 107, resulting in a weak grip of the sound-emitting portion 1201 on the antihelix and unstable wearing. If the angle between the line connecting the center of mass F of the earphone 1210 and the upper vertex of the earhook 12, and the longitudinal axis X of the sound-emitting portion 1201, is too small, the fit between the sound-emitting portion 1201 and the user's antihelix is ​​too tight, affecting the wearing comfort of the earphone 1210 and reducing the adjustability of the earphone 1210.

[0196] In some embodiments, in order to make the earphone 1210 have higher wearing stability and adjustability, on the projection of the earphone 1210 on the sagittal plane of the user, the angle b2 between the line K'F' between the projection point K' of the upper vertex and the projection point F' of the center of mass F of the earphone 1210 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 can be in the range of 30°-55°. It should be noted that the angle between the line K'F' between the projection point K' of the upper vertex and the projection point F' of the center of mass F of the earphone 1210 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 refers to the angle between the line K'F' in the counterclockwise direction and the x-axis with the positive direction of the x-axis as the reference, as shown in FIG. Figure 14 As shown. In some embodiments, in order to further improve the wearing stability of the earphone 1210, the angle b2 between the line K'F' connecting the projection point K' of the upper vertex and the projection point F' of the center of mass F of the earphone 1210 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 can be in the range of 35°-50°. In some embodiments, in order to further improve the adjustability of the earphone 1210, the angle b2 between the line K'F' connecting the projection point K' of the upper vertex and the projection point F' of the center of mass F of the earphone 1210 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 can be in the range of 38°-45°.

[0197] In some embodiments, as Figure 12 As shown, in addition to setting the position of the center of mass F of the earphone 1210, the position of the center of mass H of the sound-emitting portion 1201 can also be directly set to improve the wearing stability of the earphone 1210. Figure 12 and Figure 14As shown, in some embodiments, the projection point of the center of mass H of the sound-emitting portion 1201 onto the user's sagittal plane can coincide with the centroid of the projection of the sound-emitting portion 1201 onto the user's sagittal plane. In some embodiments, by changing the distance between the center of mass H of the sound-emitting portion 1201 and the extreme point of the earhook on the earphone 1210, the coverage position of the sound-emitting portion 1201 on the antihelix and the clamping position of the sound-emitting portion 1201 on the antihelix when worn can be simultaneously changed, thereby affecting the stability and comfort of the user wearing the earphone 1210.

[0198] When the shape and size of the sound-producing part 1201 are uniform, if the distance between the center of mass H of the sound-producing part 1201 and the extreme point of the earhook is too large, the sound-producing part 1201 will be positioned too low within the antihelix, potentially obstructing the ear canal. When the shape and size of the sound-producing part 1201 are uniform, if the distance between the center of mass H of the sound-producing part 1201 and the extreme point of the earhook is too small, the free end FE of the sound-producing part 1201 may extend beyond the edge of the auricle, also affecting wearing comfort.

[0199] In some embodiments, as Figure 14 As shown, the projection point of the center of mass H of the sound-emitting part 1201 on the sagittal plane of the user and the centroid of the projection of the sound-emitting part 1201 on the sagittal plane of the user are point H', and point H' is located on the long axis of the projection of the sound-emitting part 1201, that is, point H' is located on the x-axis. In some embodiments, in order to make the earphone 1210 have a better listening effect when worn, the distance between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 1201 on the sagittal plane of the user can be 20mm-30mm. In some embodiments, in order to keep the ear canal open, the distance between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 1201 on the sagittal plane of the user can be 15mm-25mm. In some embodiments, the distance between the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 1201 on the sagittal plane of the user can be 18mm-22mm.

[0200] In some embodiments, the fourth angle between the line connecting the center of mass H of the sound-emitting portion 1201 and the earhook extreme point and the longitudinal axis X of the sound-emitting portion 1201 can affect the position of the sound-emitting portion 1201 on the antihelix. If the fourth angle between the line connecting the center of mass H of the sound-emitting portion 1201 and the earhook extreme point and the longitudinal axis X of the sound-emitting portion 1201 is too large, the sound-emitting portion 1201 may block the ear canal. If the fourth angle between the line connecting the center of mass H of the sound-emitting portion 1201 and the earhook extreme point and the longitudinal axis X of the sound-emitting portion 1201 is too small, the free end FE of the sound-emitting portion 1201 may protrude beyond the edge of the auricle, affecting wearing comfort.

[0201] In some embodiments, the fourth angle b3 between the line N'H' connecting the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 1201 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 has a value range of 60°-87°, so that the projection point H' of the center of mass H of the sound-emitting part 1201 is located on the rear side of the extreme point N' on the long axis direction X of the sound-emitting part 1201, that is, the center of mass H of the sound-emitting part 1201 is closer to the back of the user's head than the corresponding point N of the extreme point N' on the ear hook 12, so as to further enhance the stability of the aforementioned "clamping force lever". It should be noted that the fourth angle b3 between the line N'H' connecting the extreme point N' and the projection point H' of the center of mass of the sound-emitting part 1201 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 refers to the angle between the line N'H' and the x-axis in the counterclockwise direction with the positive direction of the x-axis as the reference, as shown in FIG. Figure 14 As shown. In some embodiments, the fourth angle b3 between the line N'H' connecting the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 1201 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 can be in the range of 65°-82°. In some embodiments, the fourth angle b3 between the line N'H' connecting the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 1201 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 can be in the range of 70°-78°. In some embodiments, in order to make the clamping position of the sound-emitting part 1201 at a better position within the antihelix, the fourth angle b3 between the line N'H' connecting the extreme point N' and the projection point H' of the center of mass H of the sound-emitting part 1201 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 can be in the range of 72°-76°.

[0202] In some embodiments, on the user's sagittal plane, a third angle b1 between a line N'F' connecting the extreme point N' and the projection point F' of the center of mass F of the earphone 1210 and the longitudinal axis X (i.e., the x-axis) of the projection of the sound-producing part 1201 is smaller than a fourth angle b3 between a line N'H' connecting the extreme point N' and the projection point H' of the center of mass H of the sound-producing part 1201 and the longitudinal axis X (i.e., the x-axis) of the projection of the sound-producing part 1201. That is, the third angle b1 between the line N'F' and the x-axis is smaller than the fourth angle b3 between the line N'H' and the x-axis, thereby positioning the center of mass F of the earphone 1210 behind the center of mass H of the sound-producing part 1201 along the longitudinal axis X of the sound-producing part 1201. That is, the center of mass F of the earphone 1210 is located behind the center of mass H of the sound-producing part 1201 along the longitudinal axis X of the sound-producing part 1201. In other words, the center of mass F of the earphone 1210 is located closer to the back of the user's head than the center of mass H of the sound-producing part 1201. Through the above arrangement, the ear hook 12 of the earphone 1210 can better clamp the user's ear when being worn, further enhancing the stability of the aforementioned "clamping force lever".

[0203] The position between the upper vertex and the center of mass H of the sound-emitting portion 1201 reflects, to a certain extent, the relative position of the sound-emitting portion 1201 on the ear when the earphone 1210 is worn. Specifically, when the distance between the center of mass H of the sound-emitting portion 1201 and the upper vertex of the ear hook 12 is too large, the position of the sound-emitting portion 1201 may be closer to the opening of the user's ear canal when the user wears the earphone 1210, causing the sound-emitting portion 1201 to be positioned lower within the antihelix, thereby causing the sound-emitting portion 1201 to block the ear canal. When the distance between the center of mass H of the sound-emitting portion 1201 and the upper vertex of the ear hook 12 is too small, the free end FE of the sound-emitting portion 1201 may extend beyond the edge of the auricle, resulting in a poor wearing experience.

[0204] like Figure 14 As shown, in some embodiments, in order to obtain better wearing comfort, on the projection of the earphone 1210 on the user's sagittal plane, the distance between the projection point K' of the upper vertex and the projection point H' of the center of mass H of the sound-emitting part 1201 may be 10 mm-20 mm. In some embodiments, on the projection of the earphone 1210 on the user's sagittal plane, the distance between the projection point K' of the upper vertex and the projection point H' of the center of mass H of the sound-emitting part 1201 may be 12 mm-18 mm. In some embodiments, on the projection of the earphone 1210 on the user's sagittal plane, the distance between the projection point K' of the upper vertex and the projection point H' of the center of mass H of the sound-emitting part 1201 may be 14 mm-16 mm.

[0205] In some embodiments, the angle between the line connecting the center of mass H of the sound-emitting portion 1201 and the upper vertex of the earhook 12, and the longitudinal axis X of the sound-emitting portion 1201, can affect the stability of the earphone 1210 when worn. If the angle between the line connecting the center of mass H of the sound-emitting portion 1201 and the upper vertex of the earhook 12, and the longitudinal axis X of the sound-emitting portion 1201, is too large, the free end FE of the sound-emitting portion 1201 can be too far from the side of the user's antihelix, resulting in a weak grip of the antihelix by the sound-emitting portion 1201 and an unstable fit. If the angle between the line connecting the center of mass H of the sound-emitting portion 1201 and the upper vertex of the earhook 12, and the longitudinal axis X of the sound-emitting portion 1201, the free end FE of the sound-emitting portion 1201 can fit too tightly against the edge of the user's antihelix, affecting the wearing comfort of the earphone 1210 and reducing the adjustability of the earphone 1210.

[0206] In some embodiments, in order to make the earphone 1210 have higher wearing stability and adjustability, on the projection of the earphone 1210 on the sagittal plane of the user, the angle b4 between the line K'H' between the projection point K' of the upper vertex and the projection point H' of the center of mass H of the sound-emitting part 1201 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 can be in the range of 35°-65°. It should be noted that the angle b4 between the line K'H' between the projection point K' of the upper vertex and the projection point H' of the center of mass H of the sound-emitting part 1201 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 refers to the angle between the line K'H' in the counterclockwise direction and the x-axis with the positive direction of the x-axis as the reference, as shown in FIG. Figure 14 As shown. In some embodiments, in order to further improve the wearing stability of the earphone 1210, the angle b4 between the line K'H' connecting the projection point K' of the upper vertex and the projection point H' of the center of mass H of the sound-emitting part 1201 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 can be in the range of 40°-60°. In some embodiments, in order to further improve the adjustability of the earphone 1210, the angle b4 between the line K'H' connecting the projection point K' of the upper vertex and the projection point H' of the center of mass H of the sound-emitting part 1201 and the long axis direction X (i.e., the x-axis direction) of the projection of the sound-emitting part 1201 can be in the range of 45°-55°.

[0207] Figure 15 is a schematic diagram of a tangent segment of a second projection of an earphone according to some embodiments of this specification.

[0208] refer to Figure 15 , together with the second projection, define a tangent segment 1250 of a second closed curve, which is tangent to the first end contour at a first tangent point K0 and to the second end contour at a second tangent point K1. The lines connecting the first tangent point K0, the second tangent point K1, and the extreme point N' of the earhook's projection on the first plane can form a triangle. Since the positions of the first tangent point K0 and the second tangent point K1 are related to the second area of ​​the second closed curve, a change in the area of ​​the triangle formed by the lines connecting the first tangent point K0, the second tangent point K1, and the extreme point of the earhook's projection on the first plane will result in a change in the second area, and will also result in a corresponding change in the shape and size of the earhook 12. For example, an increase in the area of ​​the triangle corresponds to a decrease in the second area, and the size of the earhook 12 becomes smaller, which in turn affects the user's wearing experience.

[0209] In some embodiments, considering the wearing feeling of the user and the actual range of the second area of ​​the second closed curve, when the earphone 1210 is not worn, the area of ​​the triangle formed by the first tangent point K0, the second tangent point K1 and the extreme point of the projection of the ear hook on the first plane is within 110mm. 2 -230mm 2In some embodiments, the area of ​​the triangle formed by the first tangent point K0, the second tangent point K1 and the extreme point of the projection of the ear hook on the first plane is 150mm 2 -190mm 2 so that the second area of ​​the second closed curve is within the range of 1150 mm 2 -1350mm 2 between.

[0210] refer to Figure 15In some embodiments, the first tangent point K0 and the second tangent point K1 are located near the inner and outer sides of the antihelix, which is held between the sound-emitting portion 1201 and the earhook. When a user wears the earphone 1210, the line connecting the first tangent point K0 and the second tangent point K1, i.e., the size of the tangent segment 1250, is related to the size of the antihelix. Therefore, the upper vertex, the first tangent point K0, and the second tangent point K1 can determine the force applied to the antihelix when the user wears the earphone 1210, which is related to the user's wearing experience. In some embodiments, the length of the tangent segment 1250 is between 11 mm and 25 mm, the distance between the second tangent point K1 and the extreme point of the earhook's projection on the first plane is between 31 mm and 58 mm, and the distance between the first tangent point K0 and the extreme point of the earhook's projection on the first plane is between 18 mm and 41 mm. If a line segment in the triangle is too long, it will result in an inability to properly clamp the antihelix, poor wearing stability, and easy falling off; and the sound-emitting part 1201 and the ear hook provide a force close to each other under the drive of elastic force. If a line segment in the triangle is too short, it will cause discomfort to the antihelix or auricle close to the side of the head when worn, affecting the wearing experience of the earphone 1210. In some embodiments, the length of the tangent segment 1250 is between 14mm and 22mm. In some embodiments, when the earphone 1210 is not worn, the distance between the second tangent point K1 and the extreme point of the projection of the ear hook on the first plane is between 35mm and 55mm. In some embodiments, when the earphone 1210 is not worn, the distance between the first tangent point K0 and the extreme point of the projection of the ear hook on the first plane is between 22mm and 38mm. Furthermore, changes in the length of any line segment of the triangle formed by the upper vertex, the first tangent point K0, and the second tangent point K1 will cause changes in the angle of the triangle's interior angle. For the same reasons as above, in some embodiments, the angle formed by the first tangent point K0, the second tangent point K1, and the extreme point of the earhook's projection on the first plane is between 17°-37° at the second tangent point K1, between 110°-155° at the first tangent point K0, and between 9°-24° at the extreme point of the earhook's projection on the first plane. To further enhance the user's wearing experience and wearing stability, in some embodiments, the angle formed by the second tangent point K1 is between 20°-35°, the angle formed by the first tangent point K0 is between 120°-150°, and the angle formed by the extreme point of the earhook's projection on the first plane is between 10°-22°.

[0211] See also Figure 12 、 Figure 14 and Figure 15The distance between the center of mass H of the sound-emitting portion 1201 and the center of mass M of the earhook 1202 affects the shape of the first curve formed by the earhook 1202, thereby affecting the stability and comfort of the earhook 1202 when worn. Specifically, if the distance between the center of mass H of the sound-emitting portion 1201 and the center of mass M of the earhook 1202 is too short, the distance between the first curve formed by the earhook 1202 in the long-axis direction X is too small, which may cause the free end FE of the sound-emitting portion 1201 to fit too tightly against the edge of the user's auricle, affecting the wearing comfort of the earhook 1202. If the distance between the center of mass H of the sound-emitting portion 1201 and the center of mass M of the earhook 1202 is too large, the distance between the first curve formed by the earhook 1202 in the long-axis direction X is too large, which may cause the free end FE of the sound-emitting portion 1201 to protrude beyond the edge of the auricle, resulting in a poor wearing experience. Considering wearing stability, in some embodiments, when not wearing the earhook, on the projection of the earhook 1202 on the user's sagittal plane, the distance between the projection point H' of the center of mass H of the sound-emitting portion 1201 and the projection point M' of the center of mass M of the earhook 1202 is between 25 mm and 40 mm. In some embodiments, to further improve the user's comfort when wearing the earhook 1202, when not wearing the earhook, the distance between the projection point H' of the center of mass H of the sound-emitting portion 1201 and the projection point M' of the center of mass M of the earhook 1202 is between 28 mm and 36 mm. In some embodiments, when not wearing the earhook, on the projection of the earhook 1202 on the user's sagittal plane, the distance between the projection point H' of the center of mass H of the sound-emitting portion 1201 and the projection point M' of the center of mass M of the earhook 1202 is between 30 mm and 34 mm.

[0212] While the basic concepts have been described above, it will be apparent to those skilled in the art that the detailed disclosure is merely illustrative and does not limit this specification. Although not explicitly stated herein, various modifications, improvements, and revisions to this specification may be made by those skilled in the art. Such modifications, improvements, and revisions are suggested in this specification and remain within the spirit and scope of the exemplary embodiments of this specification.

[0213] This specification also uses specific terms to describe the embodiments of this specification. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a feature, structure, or characteristic associated with at least one embodiment of this specification. Therefore, it should be emphasized and noted that references to "one embodiment," "an embodiment," or "an alternative embodiment" two or more times in different locations in this specification do not necessarily refer to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of this specification may be appropriately combined.

[0214] Similarly, it should be noted that, in order to simplify the presentation of this specification and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this specification sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not imply that the subject matter of this specification requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single disclosed embodiment.

[0215] Finally, it should be understood that the embodiments described in this specification are intended only to illustrate the principles of the embodiments of this specification. Other variations may also fall within the scope of this specification. Therefore, by way of example and not limitation, alternative configurations of the embodiments of this specification may be considered consistent with the teachings of this specification. Accordingly, the embodiments of this specification are not limited to the embodiments explicitly described and illustrated in this specification.

Claims

1. A headset, characterized in that: The earphones include: a sound-emitting portion, comprising a transducer and a housing for accommodating the transducer, wherein the sound-emitting portion is provided with at least two acoustic holes for transmitting sound; The ear hook comprises a first part and a second part; in the worn state, the first part is hung between the user's auricle and the head, and the second part extends toward the side of the auricle away from the head and connects to the sound-emitting part, so that the sound-emitting part is worn near the ear canal but does not block the ear canal opening; wherein, The ear hook and the sound-emitting portion form a first projection on the user's sagittal plane, and the first projection includes an outer contour, a first end contour, an inner contour, and a second end contour. In a non-wearing state, the inner contour, the first end contour, the second end contour, and a tangent segment connecting the first end contour and the second end contour jointly define a first closed curve. The first area range of the first closed curve is 300mm. 2 -500mm 2 between; The part of the inner contour corresponding to the ear hook includes a first curve, which has an extreme point in a first direction, and the first direction is perpendicular to the long axis direction of the projection of the sound-emitting part; the extreme point is located on the posterior side of the projection point of the upper vertex of the ear hook on the sagittal plane, and the upper vertex of the ear hook is the highest point of the inner wall of the ear hook along the vertical axis of the user in the wearing state.

2. The earphone according to claim 1, wherein In the wearing state, at least a portion of the shell is inserted into the concha cavity.

3. The earphone according to claim 1, wherein Along the long axis direction of the projection of the sound-producing part, the distance between the extreme point and the projection point of the apex of the ear hook on the sagittal plane of the user is 6 mm-15 mm.

4. The earphone according to claim 1, wherein In the long axis direction of the projection of the sound-emitting part, the part of the inner contour corresponding to the ear hook includes the leftmost end and the rightmost end, and the leftmost end and the rightmost end are respectively the two end points of the first curve. In the non-worn state, in the long axis direction of the projection of the sound-emitting part, the distance between the leftmost end and the rightmost end is 25mm-35mm.

5. The earphone according to claim 1, wherein In the long axis direction of the projection of the sound-emitting part, the part of the inner contour corresponding to the ear hook includes the leftmost end. In the non-worn state, in the first direction, the distance between the extreme point and the leftmost end is 20mm-25mm.

6. The earphone according to claim 1, wherein In the long axis direction of the projection of the sound-emitting part, the part of the inner contour corresponding to the ear hook includes the leftmost end. In the non-worn state, in the first direction, the distance between the projection point of the upper vertex on the sagittal plane and the leftmost end is 17mm-22mm.

7. The earphone according to claim 1, wherein In a non-wearing state, the distance between the projection point of the center of mass of the earphone on the sagittal plane and the extreme point is 20 mm-35 mm.

8. The earphone according to claim 1, wherein In a non-wearing state, the distance between the extreme point and the projection point of the center of mass of the sound-producing part on the sagittal plane ranges from 20 mm to 30 mm.

9. The earphone according to claim 1, wherein When not wearing the headset, the distance between the projection point of the ear hook's upper vertex on the sagittal plane and the projection point of the headset's center of mass on the sagittal plane is 22mm-35mm.

10. The earphone according to claim 1, wherein In a non-wearing state, the distance between the projection point of the apex of the ear hook on the sagittal plane and the projection point of the center of mass of the sound-producing part on the sagittal plane is 18 mm-28 mm.

11. The earphone according to claim 1, wherein The tangent segment is tangent to the first end contour at a first tangent point and is tangent to the second end contour at a second tangent point. When the earphone is not worn, the area of ​​the triangle formed by the first tangent point, the second tangent point and the extreme point is within 150mm. 2 -190mm 2 between.

12. The earphone according to claim 1, wherein In a non-wearing state, the distance between the projection point of the center of mass of the sound-emitting part on the sagittal plane and the projection point of the center of mass of the ear hook on the sagittal plane is 20 mm-35 mm.

13. A headset, characterized in that: The earphones include: a sound-emitting portion, comprising a transducer and a housing for accommodating the transducer, wherein the sound-emitting portion is provided with at least two acoustic holes for transmitting sound; The ear hook comprises a first part and a second part; in the worn state, the first part is hung between the user's auricle and the head, and the second part extends toward the side of the auricle away from the head and connects to the sound-emitting part, so that the sound-emitting part is worn near the ear canal but does not block the ear canal opening; wherein, The ear hook and the sound-emitting portion form a second projection on the sagittal plane of the user, and the second projection includes an outer contour, a first end contour, an inner contour, and a second end contour. In a non-wearing state, the inner contour, the first end contour, the second end contour, and the tangent segment connecting the first end contour and the second end contour jointly define a second closed curve. The second area range of the second closed curve is 50mm. 2 -200mm 2 between; The portion of the inner contour corresponding to the ear hook includes a first curve, which has an extreme point in a first direction, and the first direction is perpendicular to the long axis direction of the projection of the sound-emitting part; along the long axis direction of the projection of the sound-emitting part, the distance between the extreme point and the projection point of the upper vertex of the ear hook on the sagittal plane of the user is not greater than 5 mm, and the upper vertex of the ear hook is the highest point of the inner wall of the ear hook along the vertical axis of the user in the wearing state.

14. The earphone according to claim 13, wherein In the wearing state, at least a portion of the shell covers the anti-helix area.

15. The earphone according to claim 13, wherein In the long axis direction of the projection of the sound-emitting part, the part of the inner contour corresponding to the ear hook includes the leftmost end and the rightmost end, and the leftmost end and the rightmost end are respectively the two endpoints of the first curve. In the long axis direction of the projection of the sound-emitting part, the distance between the leftmost end and the rightmost end is 25mm-35mm.

16. The earphone according to claim 13, wherein In the long axis direction of the projection of the sound-emitting part, the part of the inner contour corresponding to the ear hook includes the leftmost end. In the non-worn state, in the first direction, the distance between the extreme point and the leftmost end is 15mm-20mm.

17. The earphone according to claim 13, wherein In the long axis direction of the projection of the sound-emitting part, the part of the inner contour corresponding to the ear hook includes the leftmost end. In the non-worn state, in the first direction, the distance between the projection point of the upper vertex on the sagittal plane and the leftmost end is 12mm-17mm.

18. The earphone according to claim 13, wherein In a non-wearing state, the distance between the projection point of the center of mass of the earphone on the sagittal plane and the extreme point is 15 mm-30 mm.

19. The earphone according to claim 13, wherein In a non-wearing state, the distance between the extreme point and the projection point of the center of mass of the sound-producing part on the sagittal plane ranges from 15 mm to 25 mm.

20. The earphone according to claim 13, wherein When not wearing the headset, the distance between the projection point of the ear hook's upper vertex on the sagittal plane and the projection point of the headset's center of mass on the sagittal plane is 17 mm to 30 mm.

21. The earphone according to claim 13, wherein In a non-worn state, the earphone according to claim 11, wherein, in the non-worn state, the distance between the projection point of the apex of the ear hook on the sagittal plane and the projection point of the center of mass of the sound-emitting part on the sagittal plane is 10 mm-20 mm.

22. The earphone according to claim 13, wherein The tangent segment is tangent to the first end contour at a first tangent point and is tangent to the second end contour at a second tangent point. When the earphone is not worn, the area of ​​the triangle formed by the first tangent point, the second tangent point and the extreme point is within 150mm. 2 -190mm 2 between.

23. The earphone according to claim 13, wherein In a non-wearing state, the distance between the projection point of the center of mass of the sound-emitting part on the sagittal plane and the projection point of the center of mass of the ear hook on the sagittal plane is 25 mm-40 mm.

Images